diff --git a/src/Component/Exception/FactoryException.php b/src/Component/Exception/FactoryException.php
new file mode 100644
index 0000000..7605122
--- /dev/null
+++ b/src/Component/Exception/FactoryException.php
@@ -0,0 +1,27 @@
+<?php
+
+/**
+ * PHP version 7.3
+ *
+ * @category FactoryException
+ * @package  RetailCrm\Component\Exception
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
+namespace RetailCrm\Component\Exception;
+
+/**
+ * Class FactoryException
+ *
+ * @category FactoryException
+ * @package  RetailCrm\Component\Exception
+ * @author   RetailDriver LLC <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      https://help.retailcrm.ru
+ */
+class FactoryException extends \Exception
+{
+}
diff --git a/src/Component/Psr7/AppendStream.php b/src/Component/Psr7/AppendStream.php
new file mode 100644
index 0000000..99796c1
--- /dev/null
+++ b/src/Component/Psr7/AppendStream.php
@@ -0,0 +1,309 @@
+<?php
+
+/**
+ * PHP version 7.3
+ *
+ * @category AppendStream
+ * @package  RetailCrm\Component\Psr7
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
+namespace RetailCrm\Component\Psr7;
+
+use Psr\Http\Message\StreamInterface;
+
+/**
+ * Class AppendStream
+ *
+ * @category AppendStream
+ * @package  RetailCrm\Component\Psr7
+ * @author   Michael Dowling <mtdowling@gmail.com>
+ * @author   RetailDriver LLC <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      https://help.retailcrm.ru
+ */
+class AppendStream implements StreamInterface
+{
+    /** @var StreamInterface[] Streams being decorated */
+    private $streams = [];
+
+    /** @var bool */
+    private $seekable = true;
+
+    /** @var int */
+    private $current = 0;
+
+    /** @var int */
+    private $pos = 0;
+
+    /**
+     * AppendStream constructor.
+     *
+     * @param StreamInterface[] $streams Streams to decorate. Each stream must
+     *                                   be readable.
+     */
+    public function __construct(array $streams = [])
+    {
+        foreach ($streams as $stream) {
+            $this->addStream($stream);
+        }
+    }
+
+    /**
+     * @return string
+     * @throws \Throwable
+     */
+    public function __toString(): string
+    {
+        try {
+            $this->rewind();
+
+            return $this->getContents();
+        } catch (\Throwable $e) {
+            if (\PHP_VERSION_ID >= 70400) {
+                throw $e;
+            }
+
+            trigger_error(sprintf('%s::__toString exception: %s', self::class, (string) $e), E_USER_ERROR);
+        }
+    }
+
+    /**
+     * Add a stream to the AppendStream
+     *
+     * @param StreamInterface $stream Stream to append. Must be readable.
+     *
+     * @throws \InvalidArgumentException if the stream is not readable
+     */
+    public function addStream(StreamInterface $stream): void
+    {
+        if (!$stream->isReadable()) {
+            throw new \InvalidArgumentException('Each stream must be readable');
+        }
+
+        // The stream is only seekable if all streams are seekable
+        if (!$stream->isSeekable()) {
+            $this->seekable = false;
+        }
+
+        $this->streams[] = $stream;
+    }
+
+    /**
+     * @return string
+     */
+    public function getContents(): string
+    {
+        return Utils::copyToString($this);
+    }
+
+    /**
+     * Closes each attached stream.
+     */
+    public function close(): void
+    {
+        $this->pos = 0;
+        $this->current = 0;
+        $this->seekable = true;
+
+        foreach ($this->streams as $stream) {
+            $stream->close();
+        }
+
+        $this->streams = [];
+    }
+
+    /**
+     * Detaches each attached stream.
+     *
+     * Returns null as it's not clear which underlying stream resource to return.
+     */
+    public function detach()
+    {
+        $this->pos = $this->current = 0;
+        $this->seekable = true;
+
+        foreach ($this->streams as $stream) {
+            $stream->detach();
+        }
+
+        $this->streams = [];
+
+        return null;
+    }
+
+    /**
+     * @return int
+     */
+    public function tell(): int
+    {
+        return $this->pos;
+    }
+
+    /**
+     * Tries to calculate the size by adding the size of each stream.
+     *
+     * If any of the streams do not return a valid number, then the size of the
+     * append stream cannot be determined and null is returned.
+     */
+    public function getSize(): ?int
+    {
+        $size = 0;
+
+        foreach ($this->streams as $stream) {
+            $s = $stream->getSize();
+
+            if ($s === null) {
+                return null;
+            }
+
+            $size += $s;
+        }
+
+        return $size;
+    }
+
+    /**
+     * @return bool
+     */
+    public function eof(): bool
+    {
+        return !$this->streams ||
+            ($this->current >= count($this->streams) - 1 &&
+                $this->streams[$this->current]->eof());
+    }
+
+    /**
+     *
+     */
+    public function rewind(): void
+    {
+        $this->seek(0);
+    }
+
+    /**
+     * Attempts to seek to the given position. Only supports SEEK_SET.
+     *
+     * @param int $offset
+     * @param int $whence
+     */
+    public function seek($offset, $whence = SEEK_SET): void
+    {
+        if (!$this->seekable) {
+            throw new \RuntimeException('This AppendStream is not seekable');
+        }
+
+        if ($whence !== SEEK_SET) {
+            throw new \RuntimeException('The AppendStream can only seek with SEEK_SET');
+        }
+
+        $this->pos = $this->current = 0;
+
+        // Rewind each stream
+        foreach ($this->streams as $i => $stream) {
+            try {
+                $stream->rewind();
+            } catch (\Exception $e) {
+                throw new \RuntimeException('Unable to seek stream '
+                    . $i . ' of the AppendStream', 0, $e);
+            }
+        }
+
+        // Seek to the actual position by reading from each stream
+        while ($this->pos < $offset && !$this->eof()) {
+            $result = $this->read(min(8096, $offset - $this->pos));
+            if ($result === '') {
+                break;
+            }
+        }
+    }
+
+    /**
+     * Reads from all of the appended streams until the length is met or EOF.
+     *
+     * @param int $length
+     *
+     * @return string
+     */
+    public function read($length): string
+    {
+        $buffer = '';
+        $total = count($this->streams) - 1;
+        $remaining = $length;
+        $progressToNext = false;
+
+        while ($remaining > 0) {
+            if ($progressToNext || $this->streams[$this->current]->eof()) {
+                $progressToNext = false;
+
+                if ($this->current === $total) {
+                    break;
+                }
+
+                $this->current++;
+            }
+
+            $result = $this->streams[$this->current]->read($remaining);
+
+            if ($result === '') {
+                $progressToNext = true;
+
+                continue;
+            }
+
+            $buffer .= $result;
+            $remaining = $length - strlen($buffer);
+        }
+
+        $this->pos += strlen($buffer);
+
+        return $buffer;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isReadable(): bool
+    {
+        return true;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isWritable(): bool
+    {
+        return false;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isSeekable(): bool
+    {
+        return $this->seekable;
+    }
+
+    /**
+     * @param string $string
+     *
+     * @return int
+     */
+    public function write($string): int
+    {
+        throw new \RuntimeException('Cannot write to an AppendStream');
+    }
+
+    /**
+     * @param null $key
+     *
+     * @return array|mixed|null
+     */
+    public function getMetadata($key = null)
+    {
+        return $key ? null : [];
+    }
+}
diff --git a/src/Component/Psr7/BufferStream.php b/src/Component/Psr7/BufferStream.php
new file mode 100644
index 0000000..41e9a96
--- /dev/null
+++ b/src/Component/Psr7/BufferStream.php
@@ -0,0 +1,197 @@
+<?php
+
+/**
+ * PHP version 7.3
+ *
+ * @category BufferStream
+ * @package  RetailCrm\Component\Psr7
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
+namespace RetailCrm\Component\Psr7;
+
+use Psr\Http\Message\StreamInterface;
+
+/**
+ * Class BufferStream
+ *
+ * @category BufferStream
+ * @package  RetailCrm\Component\Psr7
+ * @author   Michael Dowling <mtdowling@gmail.com>
+ * @author   RetailDriver LLC <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      https://help.retailcrm.ru
+ */
+class BufferStream implements StreamInterface
+{
+    /** @var int */
+    private $hwm;
+
+    /** @var string */
+    private $buffer = '';
+
+    /**
+     * @param int $hwm High water mark, representing the preferred maximum
+     *                 buffer size. If the size of the buffer exceeds the high
+     *                 water mark, then calls to write will continue to succeed
+     *                 but will return 0 to inform writers to slow down
+     *                 until the buffer has been drained by reading from it.
+     */
+    public function __construct(int $hwm = 16384)
+    {
+        $this->hwm = $hwm;
+    }
+
+    /**
+     * @return string
+     */
+    public function __toString(): string
+    {
+        return $this->getContents();
+    }
+
+    /**
+     * @return string
+     */
+    public function getContents(): string
+    {
+        $buffer = $this->buffer;
+        $this->buffer = '';
+
+        return $buffer;
+    }
+
+    /**
+     *
+     */
+    public function close(): void
+    {
+        $this->buffer = '';
+    }
+
+    /**
+     * @return |null
+     */
+    public function detach()
+    {
+        $this->close();
+
+        return null;
+    }
+
+    /**
+     * @return int|null
+     */
+    public function getSize(): ?int
+    {
+        return strlen($this->buffer);
+    }
+
+    /**
+     * @return bool
+     */
+    public function isReadable(): bool
+    {
+        return true;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isWritable(): bool
+    {
+        return true;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isSeekable(): bool
+    {
+        return false;
+    }
+
+    /**
+     *
+     */
+    public function rewind(): void
+    {
+        $this->seek(0);
+    }
+
+    /**
+     * @param     $offset
+     * @param int $whence
+     */
+    public function seek($offset, $whence = SEEK_SET): void
+    {
+        throw new \RuntimeException('Cannot seek a BufferStream');
+    }
+
+    /**
+     * @return bool
+     */
+    public function eof(): bool
+    {
+        return strlen($this->buffer) === 0;
+    }
+
+    /**
+     * @return int
+     */
+    public function tell(): int
+    {
+        throw new \RuntimeException('Cannot determine the position of a BufferStream');
+    }
+
+    /**
+     * Reads data from the buffer.
+     */
+    public function read($length): string
+    {
+        $currentLength = strlen($this->buffer);
+
+        if ($length >= $currentLength) {
+            // No need to slice the buffer because we don't have enough data.
+            $result = $this->buffer;
+            $this->buffer = '';
+        } else {
+            // Slice up the result to provide a subset of the buffer.
+            $result = substr($this->buffer, 0, $length);
+            $this->buffer = substr($this->buffer, $length);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Writes data to the buffer.
+     */
+    public function write($string): int
+    {
+        $this->buffer .= $string;
+
+        if (strlen($this->buffer) >= $this->hwm) {
+            return 0;
+        }
+
+        return strlen($string);
+    }
+
+    /**
+     * @param null $key
+     *
+     * @return array|int|null
+     */
+    public function getMetadata($key = null)
+    {
+        if ($key === 'hwm') {
+            return $this->hwm;
+        }
+
+        return $key ? null : [];
+    }
+}
diff --git a/src/Component/Psr7/MultipartStream.php b/src/Component/Psr7/MultipartStream.php
new file mode 100644
index 0000000..d6f41d4
--- /dev/null
+++ b/src/Component/Psr7/MultipartStream.php
@@ -0,0 +1,386 @@
+<?php
+
+/**
+ * PHP version 7.3
+ *
+ * @category MultipartStream
+ * @package  RetailCrm\Component\Psr7
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
+namespace RetailCrm\Component\Psr7;
+
+use Psr\Http\Message\StreamInterface;
+
+/**
+ * Class MultipartStream
+ *
+ * @category MultipartStream
+ * @package  RetailCrm\Component\Psr7
+ * @author   Michael Dowling <mtdowling@gmail.com>
+ * @author   RetailDriver LLC <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      https://help.retailcrm.ru
+ */
+class MultipartStream implements StreamInterface
+{
+    /**
+     * @var \Psr\Http\Message\StreamInterface $stream
+     */
+    private $stream;
+
+    /** @var string */
+    private $boundary;
+
+    /**
+     * @param array       $elements Array of associative arrays, each containing a
+     *                              required "name" key mapping to the form field,
+     *                              name, a required "contents" key mapping to a
+     *                              StreamInterface/resource/string, an optional
+     *                              "headers" associative array of custom headers,
+     *                              and an optional "filename" key mapping to a
+     *                              string to send as the filename in the part.
+     * @param string|null $boundary You can optionally provide a specific boundary
+     *
+     */
+    public function __construct(array $elements = [], string $boundary = null)
+    {
+        $this->boundary = $boundary ?: sha1(uniqid('', true));
+        $this->stream = $this->createStream($elements);
+    }
+
+    /**
+     * Magic method used to create a new stream if streams are not added in
+     * the constructor of a decorator.
+     *
+     * @param string $name
+     *
+     * @return StreamInterface
+     */
+    public function __get(string $name)
+    {
+        if ($name === 'stream') {
+            $this->stream = $this->createStream();
+
+            return $this->stream;
+        }
+
+        throw new \UnexpectedValueException("$name not found on class");
+    }
+
+    /**
+     * @param string $name
+     * @param        $value
+     */
+    public function __set(string $name, $value)
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    /**
+     * @param string $name
+     */
+    public function __isset(string $name)
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    /**
+     * @return string
+     * @throws \Throwable
+     */
+    public function __toString(): string
+    {
+        try {
+            if ($this->isSeekable()) {
+                $this->seek(0);
+            }
+
+            return $this->getContents();
+        } catch (\Throwable $e) {
+            if (\PHP_VERSION_ID >= 70400) {
+                throw $e;
+            }
+
+            trigger_error(sprintf('%s::__toString exception: %s', self::class, (string) $e), E_USER_ERROR);
+        }
+    }
+
+    /**
+     * Allow decorators to implement custom methods
+     *
+     * @param string $method
+     * @param array  $args
+     *
+     * @return mixed
+     */
+    public function __call(string $method, array $args)
+    {
+        /** @var callable $callable */
+        $callable = [$this->stream, $method];
+        $result = call_user_func_array($callable, $args);
+
+        return $result === $this->stream ? $this : $result;
+    }
+
+    /**
+     * @return string
+     */
+    public function getContents(): string
+    {
+        return Utils::copyToString($this);
+    }
+
+    /**
+     * close
+     */
+    public function close(): void
+    {
+        $this->stream->close();
+    }
+
+    /**
+     * @param null $key
+     *
+     * @return array|mixed|null
+     */
+    public function getMetadata($key = null)
+    {
+        return $this->stream->getMetadata($key);
+    }
+
+    /**
+     * @return resource|null
+     */
+    public function detach()
+    {
+        return $this->stream->detach();
+    }
+
+    /**
+     * @return int|null
+     */
+    public function getSize(): ?int
+    {
+        return $this->stream->getSize();
+    }
+
+    /**
+     * @return bool
+     */
+    public function eof(): bool
+    {
+        return $this->stream->eof();
+    }
+
+    /**
+     * @return int
+     */
+    public function tell(): int
+    {
+        return $this->stream->tell();
+    }
+
+    /**
+     * @return bool
+     */
+    public function isReadable(): bool
+    {
+        return $this->stream->isReadable();
+    }
+
+    /**
+     * @return bool
+     */
+    public function isWritable(): bool
+    {
+        return $this->stream->isWritable();
+    }
+
+    /**
+     * @return bool
+     */
+    public function isSeekable(): bool
+    {
+        return $this->stream->isSeekable();
+    }
+
+    /**
+     * rewind
+     */
+    public function rewind(): void
+    {
+        $this->seek(0);
+    }
+
+    /**
+     * @param int $offset
+     * @param int $whence
+     */
+    public function seek($offset, $whence = SEEK_SET): void
+    {
+        $this->stream->seek($offset, $whence);
+    }
+
+    /**
+     * @param int $length
+     *
+     * @return string
+     */
+    public function read($length): string
+    {
+        return $this->stream->read($length);
+    }
+
+    /**
+     * @param string $string
+     *
+     * @return int
+     */
+    public function write($string): int
+    {
+        return $this->stream->write($string);
+    }
+
+    /**
+     * @return string
+     */
+    public function getBoundary(): string
+    {
+        return $this->boundary;
+    }
+
+    /**
+     * Create the aggregate stream that will be used to upload the POST data
+     *
+     * @param array $elements
+     *
+     * @return \Psr\Http\Message\StreamInterface
+     */
+    protected function createStream(array $elements = []): StreamInterface
+    {
+        $stream = new AppendStream();
+
+        foreach ($elements as $element) {
+            $this->addElement($stream, $element);
+        }
+
+        // Add the trailing boundary with CRLF
+        $stream->addStream(Utils::streamFor("--{$this->boundary}--\r\n"));
+
+        return $stream;
+    }
+
+    /**
+     * Get the headers needed before transferring the content of a POST file
+     *
+     * @param array<string, string> $headers
+     *
+     * @return string
+     */
+    private function getHeaders(array $headers): string
+    {
+        $str = '';
+
+        foreach ($headers as $key => $value) {
+            $str .= "{$key}: {$value}\r\n";
+        }
+
+        return "--{$this->boundary}\r\n" . trim($str) . "\r\n\r\n";
+    }
+
+    /**
+     * @param \RetailCrm\Component\Psr7\AppendStream $stream
+     * @param array                                  $element
+     */
+    private function addElement(AppendStream $stream, array $element): void
+    {
+        foreach (['contents', 'name'] as $key) {
+            if (!array_key_exists($key, $element)) {
+                throw new \InvalidArgumentException("A '{$key}' key is required");
+            }
+        }
+
+        $element['contents'] = Utils::streamFor($element['contents']);
+
+        if (empty($element['filename'])) {
+            $uri = $element['contents']->getMetadata('uri');
+
+            if (substr($uri, 0, 6) !== 'php://') {
+                $element['filename'] = $uri;
+            }
+        }
+
+        [$body, $headers] = $this->createElement(
+            $element['name'],
+            $element['contents'],
+            $element['filename'] ?? null,
+            $element['headers'] ?? []
+        );
+
+        $stream->addStream(Utils::streamFor($this->getHeaders($headers)));
+        $stream->addStream($body);
+        $stream->addStream(Utils::streamFor("\r\n"));
+    }
+
+    /**
+     * @param string                            $name
+     * @param \Psr\Http\Message\StreamInterface $stream
+     * @param string|null                       $filename
+     * @param array                             $headers
+     *
+     * @return array
+     */
+    private function createElement(string $name, StreamInterface $stream, ?string $filename, array $headers): array
+    {
+        // Set a default content-disposition header if one was no provided
+        $disposition = $this->getHeader($headers, 'content-disposition');
+
+        if (!$disposition) {
+            $headers['Content-Disposition'] = ($filename === '0' || $filename)
+                ? sprintf(
+                    'form-data; name="%s"; filename="%s"',
+                    $name,
+                    basename($filename)
+                )
+                : "form-data; name=\"{$name}\"";
+        }
+
+        // Set a default content-length header if one was no provided
+        $length = $this->getHeader($headers, 'content-length');
+
+        if (!$length && $length = $stream->getSize()) {
+            $headers['Content-Length'] = (string) $length;
+        }
+
+        // Set a default Content-Type if one was not supplied
+        $type = $this->getHeader($headers, 'content-type');
+
+        if (!$type && ($filename === '0' || $filename) && $type = Utils::mimetypeFromFilename($filename)) {
+            $headers['Content-Type'] = $type;
+        }
+
+        return [$stream, $headers];
+    }
+
+    /**
+     * @param array  $headers
+     * @param string $key
+     *
+     * @return mixed|null
+     */
+    private function getHeader(array $headers, string $key)
+    {
+        $lowercaseHeader = strtolower($key);
+        foreach ($headers as $k => $v) {
+            if (strtolower($k) === $lowercaseHeader) {
+                return $v;
+            }
+        }
+
+        return null;
+    }
+}
diff --git a/src/Component/Psr7/PumpStream.php b/src/Component/Psr7/PumpStream.php
new file mode 100644
index 0000000..978eb0a
--- /dev/null
+++ b/src/Component/Psr7/PumpStream.php
@@ -0,0 +1,241 @@
+<?php
+
+/**
+ * PHP version 7.3
+ *
+ * @category PumpStream
+ * @package  RetailCrm\Component\Psr7
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
+namespace RetailCrm\Component\Psr7;
+
+use Psr\Http\Message\StreamInterface;
+
+/**
+ * Class PumpStream
+ *
+ * @category PumpStream
+ * @package  RetailCrm\Component\Psr7
+ * @author   Michael Dowling <mtdowling@gmail.com>
+ * @author   RetailDriver LLC <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      https://help.retailcrm.ru
+ */
+class PumpStream implements StreamInterface
+{
+    /** @var callable|null */
+    private $source;
+
+    /** @var int|null */
+    private $size;
+
+    /** @var int */
+    private $tellPos = 0;
+
+    /** @var array */
+    private $metadata;
+
+    /** @var BufferStream */
+    private $buffer;
+
+    /**
+     * @param callable(int): (string|null|false)  $source  Source of the stream data. The callable MAY
+     *                                                     accept an integer argument used to control the
+     *                                                     amount of data to return. The callable MUST
+     *                                                     return a string when called, or false|null on error
+     *                                                     or EOF.
+     * @param array{size?: int, metadata?: array} $options Stream options:
+     *                                                     - metadata: Hash of metadata to use with stream.
+     *                                                     - size: Size of the stream, if known.
+     */
+    public function __construct(callable $source, array $options = [])
+    {
+        $this->source = $source;
+        $this->size = $options['size'] ?? null;
+        $this->metadata = $options['metadata'] ?? [];
+        $this->buffer = new BufferStream();
+    }
+
+    /**
+     * @return string
+     * @throws \Throwable
+     */
+    public function __toString(): string
+    {
+        try {
+            return Utils::copyToString($this);
+        } catch (\Throwable $e) {
+            if (\PHP_VERSION_ID >= 70400) {
+                throw $e;
+            }
+
+            trigger_error(sprintf('%s::__toString exception: %s', self::class, (string) $e), E_USER_ERROR);
+        }
+    }
+
+    /**
+     * @return void
+     */
+    public function close(): void
+    {
+        $this->detach();
+    }
+
+    /**
+     * @return |null
+     */
+    public function detach()
+    {
+        $this->tellPos = 0;
+        $this->source = null;
+
+        return null;
+    }
+
+    /**
+     * @return int|null
+     */
+    public function getSize(): ?int
+    {
+        return $this->size;
+    }
+
+    /**
+     * @return int
+     */
+    public function tell(): int
+    {
+        return $this->tellPos;
+    }
+
+    /**
+     * @return bool
+     */
+    public function eof(): bool
+    {
+        return $this->source === null;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isSeekable(): bool
+    {
+        return false;
+    }
+
+    /**
+     *
+     */
+    public function rewind(): void
+    {
+        $this->seek(0);
+    }
+
+    /**
+     * @param     $offset
+     * @param int $whence
+     */
+    public function seek($offset, $whence = SEEK_SET): void
+    {
+        throw new \RuntimeException('Cannot seek a PumpStream');
+    }
+
+    /**
+     * @return bool
+     */
+    public function isWritable(): bool
+    {
+        return false;
+    }
+
+    /**
+     * @param $string
+     *
+     * @return int
+     */
+    public function write($string): int
+    {
+        throw new \RuntimeException('Cannot write to a PumpStream');
+    }
+
+    /**
+     * @return bool
+     */
+    public function isReadable(): bool
+    {
+        return true;
+    }
+
+    /**
+     * @param $length
+     *
+     * @return string
+     */
+    public function read($length): string
+    {
+        $data = $this->buffer->read($length);
+        $readLen = strlen($data);
+        $this->tellPos += $readLen;
+        $remaining = $length - $readLen;
+
+        if ($remaining) {
+            $this->pump($remaining);
+            $data .= $this->buffer->read($remaining);
+            $this->tellPos += strlen($data) - $readLen;
+        }
+
+        return $data;
+    }
+
+    /**
+     * @return string
+     */
+    public function getContents(): string
+    {
+        $result = '';
+        while (!$this->eof()) {
+            $result .= $this->read(1000000);
+        }
+
+        return $result;
+    }
+
+    /**
+     * @param null $key
+     *
+     * @return array|mixed|null
+     */
+    public function getMetadata($key = null)
+    {
+        if (!$key) {
+            return $this->metadata;
+        }
+
+        return $this->metadata[$key] ?? null;
+    }
+
+    /**
+     * @param int $length
+     */
+    private function pump(int $length): void
+    {
+        if ($this->source) {
+            do {
+                $data = call_user_func($this->source, $length);
+
+                if ($data === false || $data === null) {
+                    $this->source = null;
+                    return;
+                }
+
+                $this->buffer->write($data);
+                $length -= strlen($data);
+            } while ($length > 0);
+        }
+    }
+}
diff --git a/src/Component/Psr7/Stream.php b/src/Component/Psr7/Stream.php
new file mode 100644
index 0000000..c9336ce
--- /dev/null
+++ b/src/Component/Psr7/Stream.php
@@ -0,0 +1,362 @@
+<?php
+
+/**
+ * PHP version 7.3
+ *
+ * @category Stream
+ * @package  RetailCrm\Component\Psr7
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
+namespace RetailCrm\Component\Psr7;
+
+use Psr\Http\Message\StreamInterface;
+
+/**
+ * Class Stream
+ *
+ * @category Stream
+ * @package  RetailCrm\Component\Psr7
+ * @author   Michael Dowling <mtdowling@gmail.com>
+ * @author   RetailDriver LLC <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      https://help.retailcrm.ru
+ */
+class Stream implements StreamInterface
+{
+    /**
+     * @see http://php.net/manual/function.fopen.php
+     * @see http://php.net/manual/en/function.gzopen.php
+     */
+    private const READABLE_MODES = '/r|a\+|ab\+|w\+|wb\+|x\+|xb\+|c\+|cb\+/';
+    /**
+     *
+     */
+    private const WRITABLE_MODES = '/a|w|r\+|rb\+|rw|x|c/';
+
+    /** @var resource */
+    private $stream;
+
+    /** @var int|null */
+    private $size;
+
+    /** @var bool */
+    private $seekable;
+
+    /** @var bool */
+    private $readable;
+
+    /** @var bool */
+    private $writable;
+
+    /** @var string|null */
+    private $uri;
+
+    /** @var mixed[] */
+    private $customMetadata;
+
+    /**
+     * This constructor accepts an associative array of options.
+     *
+     * - size: (int) If a read stream would otherwise have an indeterminate
+     *   size, but the size is known due to foreknowledge, then you can
+     *   provide that size, in bytes.
+     * - metadata: (array) Any additional metadata to return when the metadata
+     *   of the stream is accessed.
+     *
+     * @param resource                            $stream  Stream resource to wrap.
+     * @param array{size?: int, metadata?: array} $options Associative array of options.
+     *
+     * @throws \InvalidArgumentException if the stream is not a stream resource
+     */
+    public function __construct($stream, array $options = [])
+    {
+        if (!is_resource($stream)) {
+            throw new \InvalidArgumentException('Stream must be a resource');
+        }
+
+        if (isset($options['size'])) {
+            $this->size = $options['size'];
+        }
+
+        $this->customMetadata = $options['metadata'] ?? [];
+        $this->stream = $stream;
+        $meta = stream_get_meta_data($this->stream);
+        $this->seekable = $meta['seekable'];
+        $this->readable = (bool)preg_match(self::READABLE_MODES, $meta['mode']);
+        $this->writable = (bool)preg_match(self::WRITABLE_MODES, $meta['mode']);
+        $this->uri = $this->getMetadata('uri');
+    }
+
+    /**
+     * Closes the stream when the destructed
+     */
+    public function __destruct()
+    {
+        $this->close();
+    }
+
+    /**
+     * @return string
+     * @throws \Throwable
+     */
+    public function __toString(): string
+    {
+        try {
+            if ($this->isSeekable()) {
+                $this->seek(0);
+            }
+
+            return $this->getContents();
+        } catch (\Throwable $e) {
+            if (\PHP_VERSION_ID >= 70400) {
+                throw $e;
+            }
+
+            trigger_error(sprintf('%s::__toString exception: %s', self::class, (string) $e), E_USER_ERROR);
+        }
+    }
+
+    /**
+     * @return string
+     */
+    public function getContents(): string
+    {
+        if (!isset($this->stream)) {
+            throw new \RuntimeException('Stream is detached');
+        }
+
+        $contents = stream_get_contents($this->stream);
+
+        if ($contents === false) {
+            throw new \RuntimeException('Unable to read stream contents');
+        }
+
+        return $contents;
+    }
+
+    /**
+     *
+     */
+    public function close(): void
+    {
+        if (isset($this->stream)) {
+            if (is_resource($this->stream)) {
+                fclose($this->stream);
+            }
+
+            $this->detach();
+        }
+    }
+
+    /**
+     * @return resource|null
+     */
+    public function detach()
+    {
+        if (!isset($this->stream)) {
+            return null;
+        }
+
+        $result = $this->stream;
+        unset($this->stream);
+        $this->size = $this->uri = null;
+        $this->readable = false;
+        $this->writable = false;
+        $this->seekable = false;
+
+        return $result;
+    }
+
+    /**
+     * @return int|null
+     */
+    public function getSize(): ?int
+    {
+        if ($this->size !== null) {
+            return $this->size;
+        }
+
+        if (!isset($this->stream)) {
+            return null;
+        }
+
+        // Clear the stat cache if the stream has a URI
+        if ($this->uri) {
+            clearstatcache(true, $this->uri);
+        }
+
+        $stats = fstat($this->stream);
+        if (is_array($stats) && isset($stats['size'])) {
+            $this->size = $stats['size'];
+            return $this->size;
+        }
+
+        return null;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isReadable(): bool
+    {
+        return $this->readable;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isWritable(): bool
+    {
+        return $this->writable;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isSeekable(): bool
+    {
+        return $this->seekable;
+    }
+
+    /**
+     * @return bool
+     */
+    public function eof(): bool
+    {
+        if (!isset($this->stream)) {
+            throw new \RuntimeException('Stream is detached');
+        }
+
+        return feof($this->stream);
+    }
+
+    /**
+     * @return int
+     */
+    public function tell(): int
+    {
+        if (!isset($this->stream)) {
+            throw new \RuntimeException('Stream is detached');
+        }
+
+        $result = ftell($this->stream);
+
+        if ($result === false) {
+            throw new \RuntimeException('Unable to determine stream position');
+        }
+
+        return $result;
+    }
+
+    /**
+     *
+     */
+    public function rewind(): void
+    {
+        $this->seek(0);
+    }
+
+    /**
+     * @param int $offset
+     * @param int $whence
+     */
+    public function seek($offset, $whence = SEEK_SET): void
+    {
+        $whence = (int) $whence;
+
+        if (!isset($this->stream)) {
+            throw new \RuntimeException('Stream is detached');
+        }
+
+        if (!$this->seekable) {
+            throw new \RuntimeException('Stream is not seekable');
+        }
+
+        if (fseek($this->stream, $offset, $whence) === -1) {
+            throw new \RuntimeException('Unable to seek to stream position '
+                . $offset . ' with whence ' . var_export($whence, true));
+        }
+    }
+
+    /**
+     * @param int $length
+     *
+     * @return string
+     */
+    public function read($length): string
+    {
+        if (!isset($this->stream)) {
+            throw new \RuntimeException('Stream is detached');
+        }
+
+        if (!$this->readable) {
+            throw new \RuntimeException('Cannot read from non-readable stream');
+        }
+
+        if ($length < 0) {
+            throw new \RuntimeException('Length parameter cannot be negative');
+        }
+
+        if (0 === $length) {
+            return '';
+        }
+
+        $string = fread($this->stream, $length);
+
+        if (false === $string) {
+            throw new \RuntimeException('Unable to read from stream');
+        }
+
+        return $string;
+    }
+
+    /**
+     * @param string $string
+     *
+     * @return int
+     */
+    public function write($string): int
+    {
+        if (!isset($this->stream)) {
+            throw new \RuntimeException('Stream is detached');
+        }
+
+        if (!$this->writable) {
+            throw new \RuntimeException('Cannot write to a non-writable stream');
+        }
+
+        // We can't know the size after writing anything
+        $this->size = null;
+        $result = fwrite($this->stream, $string);
+
+        if ($result === false) {
+            throw new \RuntimeException('Unable to write to stream');
+        }
+
+        return $result;
+    }
+
+    /**
+     * @param null $key
+     *
+     * @return array|mixed|mixed[]|null
+     */
+    public function getMetadata($key = null)
+    {
+        if (!isset($this->stream)) {
+            return $key ? null : [];
+        } elseif (!$key) {
+            return $this->customMetadata + stream_get_meta_data($this->stream);
+        } elseif (isset($this->customMetadata[$key])) {
+            return $this->customMetadata[$key];
+        }
+
+        $meta = stream_get_meta_data($this->stream);
+
+        return $meta[$key] ?? null;
+    }
+}
diff --git a/src/Component/Psr7/Utils.php b/src/Component/Psr7/Utils.php
new file mode 100644
index 0000000..d6a220c
--- /dev/null
+++ b/src/Component/Psr7/Utils.php
@@ -0,0 +1,304 @@
+<?php
+
+/**
+ * PHP version 7.3
+ *
+ * @category Utils
+ * @package  RetailCrm\Component\Psr7
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
+namespace RetailCrm\Component\Psr7;
+
+use Psr\Http\Message\StreamInterface;
+
+/**
+ * Class Utils
+ *
+ * @category Utils
+ * @package  RetailCrm\Component\Psr7
+ * @author   Michael Dowling <mtdowling@gmail.com>
+ * @author   RetailDriver LLC <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      https://help.retailcrm.ru
+ */
+class Utils
+{
+    /**
+     * Copy the contents of a stream into a string until the given number of
+     * bytes have been read.
+     *
+     * @param StreamInterface $stream Stream to read
+     * @param int             $maxLen Maximum number of bytes to read. Pass -1
+     *                                to read the entire stream.
+     *
+     * @return string
+     * @throws \RuntimeException on error.
+     */
+    public static function copyToString(StreamInterface $stream, int $maxLen = -1): string
+    {
+        $buffer = '';
+
+        if ($maxLen === -1) {
+            while (!$stream->eof()) {
+                $buf = $stream->read(1048576);
+
+                if ($buf === '') {
+                    break;
+                }
+
+                $buffer .= $buf;
+            }
+            return $buffer;
+        }
+
+        $len = 0;
+
+        while (!$stream->eof() && $len < $maxLen) {
+            $buf = $stream->read($maxLen - $len);
+            if ($buf === '') {
+                break;
+            }
+            $buffer .= $buf;
+            $len = strlen($buffer);
+        }
+
+        return $buffer;
+    }
+
+    /**
+     * Safely opens a PHP stream resource using a filename.
+     *
+     * When fopen fails, PHP normally raises a warning. This function adds an
+     * error handler that checks for errors and throws an exception instead.
+     *
+     * @param string $filename File to open
+     * @param string $mode     Mode used to open the file
+     *
+     * @return resource
+     *
+     * @throws \RuntimeException if the file cannot be opened
+     */
+    public static function tryFopen(string $filename, string $mode)
+    {
+        $ex = null;
+
+        set_error_handler(static function (int $errno, string $errstr) use ($filename, $mode, &$ex): bool {
+            $ex = new \RuntimeException(sprintf(
+                'Unable to open %s using mode %s: %s',
+                $filename,
+                $mode,
+                $errstr
+            ));
+
+            return false;
+        });
+
+        /** @var resource $handle */
+        $handle = fopen($filename, $mode);
+
+        restore_error_handler();
+
+        if ($ex) {
+            throw $ex;
+        }
+
+        return $handle;
+    }
+
+    /**
+     * Create a new stream based on the input type.
+     *
+     * Options is an associative array that can contain the following keys:
+     * - metadata: Array of custom metadata.
+     * - size: Size of the stream.
+     *
+     * @param resource|string|int|float|bool|StreamInterface|callable|\Iterator|null $resource Entity body data
+     * @param array{size?: int, metadata?: array}                                    $options  Additional options
+     *
+     * @return \Psr\Http\Message\StreamInterface
+     * @throws \InvalidArgumentException if the $resource arg is not valid.
+     */
+    public static function streamFor($resource = '', array $options = []): StreamInterface
+    {
+        if (is_scalar($resource)) {
+            $stream = self::tryFopen('php://temp', 'r+');
+
+            if ($resource !== '') {
+                fwrite($stream, (string) $resource);
+                fseek($stream, 0);
+            }
+
+            return new Stream($stream, $options);
+        }
+
+        switch (gettype($resource)) {
+            case 'resource':
+                /** @var resource $resource */
+                return new Stream($resource, $options);
+            case 'object':
+                /** @var object $resource */
+                if ($resource instanceof StreamInterface) {
+                    return $resource;
+                } elseif ($resource instanceof \Iterator) {
+                    return new PumpStream(function () use ($resource) {
+                        if (!$resource->valid()) {
+                            return false;
+                        }
+
+                        $result = $resource->current();
+                        $resource->next();
+
+                        return $result;
+                    }, $options);
+                } elseif (method_exists($resource, '__toString')) {
+                    return self::streamFor((string) $resource, $options);
+                }
+
+                break;
+            case 'NULL':
+                return new Stream(self::tryFopen('php://temp', 'r+'), $options);
+        }
+
+        if (is_callable($resource)) {
+            return new PumpStream($resource, $options);
+        }
+
+        throw new \InvalidArgumentException('Invalid resource type: ' . gettype($resource));
+    }
+
+    /**
+     * Determines the mimetype of a file by looking at its extension.
+     *
+     * @param string $filename
+     *
+     * @return string|null
+     */
+    public static function mimetypeFromFilename(string $filename): ?string
+    {
+        return self::mimetypeFromExtension(pathinfo($filename, PATHINFO_EXTENSION));
+    }
+
+    /**
+     * Maps a file extensions to a mimetype.
+     *
+     * @link http://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x/conf/mime.types
+     *
+     * @param string $extension
+     *
+     * @return string|null
+     */
+    public static function mimetypeFromExtension(string $extension): ?string
+    {
+        static $mimetypes = [
+            '3gp' => 'video/3gpp',
+            '7z' => 'application/x-7z-compressed',
+            'aac' => 'audio/x-aac',
+            'ai' => 'application/postscript',
+            'aif' => 'audio/x-aiff',
+            'asc' => 'text/plain',
+            'asf' => 'video/x-ms-asf',
+            'atom' => 'application/atom+xml',
+            'avi' => 'video/x-msvideo',
+            'bmp' => 'image/bmp',
+            'bz2' => 'application/x-bzip2',
+            'cer' => 'application/pkix-cert',
+            'crl' => 'application/pkix-crl',
+            'crt' => 'application/x-x509-ca-cert',
+            'css' => 'text/css',
+            'csv' => 'text/csv',
+            'cu' => 'application/cu-seeme',
+            'deb' => 'application/x-debian-package',
+            'doc' => 'application/msword',
+            'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+            'dvi' => 'application/x-dvi',
+            'eot' => 'application/vnd.ms-fontobject',
+            'eps' => 'application/postscript',
+            'epub' => 'application/epub+zip',
+            'etx' => 'text/x-setext',
+            'flac' => 'audio/flac',
+            'flv' => 'video/x-flv',
+            'gif' => 'image/gif',
+            'gz' => 'application/gzip',
+            'htm' => 'text/html',
+            'html' => 'text/html',
+            'ico' => 'image/x-icon',
+            'ics' => 'text/calendar',
+            'ini' => 'text/plain',
+            'iso' => 'application/x-iso9660-image',
+            'jar' => 'application/java-archive',
+            'jpe' => 'image/jpeg',
+            'jpeg' => 'image/jpeg',
+            'jpg' => 'image/jpeg',
+            'js' => 'text/javascript',
+            'json' => 'application/json',
+            'latex' => 'application/x-latex',
+            'log' => 'text/plain',
+            'm4a' => 'audio/mp4',
+            'm4v' => 'video/mp4',
+            'mid' => 'audio/midi',
+            'midi' => 'audio/midi',
+            'mov' => 'video/quicktime',
+            'mkv' => 'video/x-matroska',
+            'mp3' => 'audio/mpeg',
+            'mp4' => 'video/mp4',
+            'mp4a' => 'audio/mp4',
+            'mp4v' => 'video/mp4',
+            'mpe' => 'video/mpeg',
+            'mpeg' => 'video/mpeg',
+            'mpg' => 'video/mpeg',
+            'mpg4' => 'video/mp4',
+            'oga' => 'audio/ogg',
+            'ogg' => 'audio/ogg',
+            'ogv' => 'video/ogg',
+            'ogx' => 'application/ogg',
+            'pbm' => 'image/x-portable-bitmap',
+            'pdf' => 'application/pdf',
+            'pgm' => 'image/x-portable-graymap',
+            'png' => 'image/png',
+            'pnm' => 'image/x-portable-anymap',
+            'ppm' => 'image/x-portable-pixmap',
+            'ppt' => 'application/vnd.ms-powerpoint',
+            'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
+            'ps' => 'application/postscript',
+            'qt' => 'video/quicktime',
+            'rar' => 'application/x-rar-compressed',
+            'ras' => 'image/x-cmu-raster',
+            'rss' => 'application/rss+xml',
+            'rtf' => 'application/rtf',
+            'sgm' => 'text/sgml',
+            'sgml' => 'text/sgml',
+            'svg' => 'image/svg+xml',
+            'swf' => 'application/x-shockwave-flash',
+            'tar' => 'application/x-tar',
+            'tif' => 'image/tiff',
+            'tiff' => 'image/tiff',
+            'torrent' => 'application/x-bittorrent',
+            'ttf' => 'application/x-font-ttf',
+            'txt' => 'text/plain',
+            'wav' => 'audio/x-wav',
+            'webm' => 'video/webm',
+            'webp' => 'image/webp',
+            'wma' => 'audio/x-ms-wma',
+            'wmv' => 'video/x-ms-wmv',
+            'woff' => 'application/x-font-woff',
+            'wsdl' => 'application/wsdl+xml',
+            'xbm' => 'image/x-xbitmap',
+            'xls' => 'application/vnd.ms-excel',
+            'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+            'xml' => 'application/xml',
+            'xpm' => 'image/x-xpixmap',
+            'xwd' => 'image/x-xwindowdump',
+            'yaml' => 'text/yaml',
+            'yml' => 'text/yaml',
+            'zip' => 'application/zip',
+        ];
+
+        $extension = strtolower($extension);
+
+        return $mimetypes[$extension] ?? null;
+    }
+}
diff --git a/src/Component/ServiceLocator.php b/src/Component/ServiceLocator.php
new file mode 100644
index 0000000..24ee05b
--- /dev/null
+++ b/src/Component/ServiceLocator.php
@@ -0,0 +1,41 @@
+<?php
+
+/**
+ * PHP version 7.3
+ *
+ * @category ServiceLocator
+ * @package  RetailCrm\Component
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
+namespace RetailCrm\Component;
+
+use RetailCrm\Factory\FileItemFactory;
+use RetailCrm\Interfaces\ContainerAwareInterface;
+use RetailCrm\Interfaces\FileItemFactoryInterface;
+use RetailCrm\Traits\ContainerAwareTrait;
+
+/**
+ * Class ServiceLocator
+ *
+ * @category ServiceLocator
+ * @package  RetailCrm\Component
+ * @author   RetailDriver LLC <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      https://help.retailcrm.ru
+ */
+class ServiceLocator implements ContainerAwareInterface
+{
+    use ContainerAwareTrait;
+
+    /**
+     * @return \RetailCrm\Interfaces\FileItemFactoryInterface
+     */
+    public function getFileItemFactory(): FileItemFactoryInterface
+    {
+        return $this->getContainer()->get(FileItemFactory::class);
+    }
+}
diff --git a/src/Factory/ClientFactory.php b/src/Factory/ClientFactory.php
index 01c5472..f3b73a6 100644
--- a/src/Factory/ClientFactory.php
+++ b/src/Factory/ClientFactory.php
@@ -14,6 +14,7 @@ namespace RetailCrm\Factory;
 
 use Psr\Container\ContainerInterface;
 use RetailCrm\Component\Constants;
+use RetailCrm\Component\ServiceLocator;
 use RetailCrm\Interfaces\AppDataInterface;
 use RetailCrm\Interfaces\AuthenticatorInterface;
 use RetailCrm\Interfaces\ContainerAwareInterface;
@@ -87,6 +88,7 @@ class ClientFactory implements ContainerAwareInterface, FactoryInterface
         $client->setSerializer($this->container->get(Constants::SERIALIZER));
         $client->setValidator($this->container->get(Constants::VALIDATOR));
         $client->setRequestFactory($this->container->get(RequestFactory::class));
+        $client->setServiceLocator($this->container->get(ServiceLocator::class));
         $client->validateSelf();
 
         return $client;
diff --git a/src/Factory/ContainerFactory.php b/src/Factory/ContainerFactory.php
index 893bea1..d24115a 100644
--- a/src/Factory/ContainerFactory.php
+++ b/src/Factory/ContainerFactory.php
@@ -13,22 +13,23 @@
 namespace RetailCrm\Factory;
 
 use JMS\Serializer\GraphNavigatorInterface;
+use JMS\Serializer\Handler\HandlerRegistry;
 use JMS\Serializer\Serializer;
-use RetailCrm\Component\Constants;
-use RetailCrm\Service\RequestSigner;
-use Shieldon\Psr17\StreamFactory;
-use Shieldon\Psr17\UploadedFileFactory as BaseUploadedFileFactory;
-use Shieldon\Psr17\RequestFactory as BaseRequestFactory;
 use JMS\Serializer\SerializerBuilder;
+use JMS\Serializer\SerializerInterface;
 use Psr\Container\ContainerInterface;
 use Psr\Http\Client\ClientInterface;
+use RetailCrm\Component\Constants;
 use RetailCrm\Component\DependencyInjection\Container;
 use RetailCrm\Component\Environment;
+use RetailCrm\Component\ServiceLocator;
 use RetailCrm\Interfaces\FactoryInterface;
+use RetailCrm\Service\RequestDataFilter;
+use RetailCrm\Service\RequestSigner;
+use Shieldon\Psr17\StreamFactory;
 use Symfony\Component\Validator\Validation;
 use Symfony\Component\Validator\Validator\TraceableValidator;
 use Symfony\Component\Validator\Validator\ValidatorInterface;
-use JMS\Serializer\Handler\HandlerRegistry;
 
 /**
  * Class EnvironmentFactory
@@ -109,17 +110,29 @@ class ContainerFactory implements FactoryInterface
             Constants::VALIDATOR,
             Validation::createValidatorBuilder()->enableAnnotationMapping()->getValidator()
         );
-        $container->set(Constants::SERIALIZER, $this->getSerializer());
-        $container->set(UploadedFileFactory::class, new UploadedFileFactory(
-            new BaseUploadedFileFactory(),
-            new StreamFactory())
-        );
-        $container->set(BaseRequestFactory::class, new BaseRequestFactory());
+        $container->set(Constants::SERIALIZER, function (ContainerInterface $container) {
+            return SerializerFactory::withContainer($container)->create();
+        });
+        $container->set(FileItemFactory::class, new FileItemFactory(new StreamFactory()));
+        $container->set(RequestDataFilter::class, new RequestDataFilter());
         $container->set(RequestSigner::class, function (ContainerInterface $container) {
-            return new RequestSigner($container->get(Constants::SERIALIZER));
+            return new RequestSigner(
+                $container->get(Constants::SERIALIZER),
+                $container->get(RequestDataFilter::class)
+            );
         });
         $container->set(RequestFactory::class, function (ContainerInterface $container) {
-            return new RequestFactory($container->get(RequestSigner::class), $container->get(BaseRequestFactory::class));
+            return new RequestFactory(
+                $container->get(RequestSigner::class),
+                $container->get(RequestDataFilter::class),
+                $container->get(Constants::SERIALIZER)
+            );
+        });
+        $container->set(ServiceLocator::class, function (ContainerInterface $container) {
+            $locator = new ServiceLocator();
+            $locator->setContainer($container);
+
+            return $locator;
         });
     }
 
@@ -134,43 +147,4 @@ class ContainerFactory implements FactoryInterface
             $container->set('validator', new TraceableValidator($validator));
         }
     }
-
-    /**
-     * @return \JMS\Serializer\Serializer
-     */
-    protected function getSerializer(): Serializer
-    {
-        return SerializerBuilder::create()
-            ->configureHandlers(function(HandlerRegistry $registry) {
-                $returnNull = function($visitor, $obj, array $type) {
-                    return null;
-                };
-
-                $registry->registerHandler(
-                    GraphNavigatorInterface::DIRECTION_SERIALIZATION,
-                    'UploadedFileInterface',
-                    'json',
-                    $returnNull
-                );
-                $registry->registerHandler(
-                    GraphNavigatorInterface::DIRECTION_DESERIALIZATION,
-                    'UploadedFileInterface',
-                    'json',
-                    $returnNull
-                );
-                $registry->registerHandler(
-                    GraphNavigatorInterface::DIRECTION_SERIALIZATION,
-                    'UploadedFileInterface',
-                    'xml',
-                    $returnNull
-                );
-                $registry->registerHandler(
-                    GraphNavigatorInterface::DIRECTION_DESERIALIZATION,
-                    'UploadedFileInterface',
-                    'xml',
-                    $returnNull
-                );
-            })->addDefaultHandlers()
-            ->build();
-    }
 }
diff --git a/src/Factory/FileItemFactory.php b/src/Factory/FileItemFactory.php
new file mode 100644
index 0000000..41fa959
--- /dev/null
+++ b/src/Factory/FileItemFactory.php
@@ -0,0 +1,65 @@
+<?php
+
+/**
+ * PHP version 7.3
+ *
+ * @category FileItemFactory
+ * @package  RetailCrm\Factory
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
+namespace RetailCrm\Factory;
+
+use Psr\Http\Message\StreamFactoryInterface;
+use RetailCrm\Interfaces\FileItemFactoryInterface;
+use RetailCrm\Interfaces\FileItemInterface;
+use RetailCrm\Model\FileItem;
+
+/**
+ * Class FileItemFactory
+ *
+ * @category FileItemFactory
+ * @package  RetailCrm\Factory
+ * @author   RetailDriver LLC <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      https://help.retailcrm.ru
+ */
+class FileItemFactory implements FileItemFactoryInterface
+{
+    /** @var StreamFactoryInterface $streamFactory */
+    private $streamFactory;
+
+    /**
+     * FileItemFactory constructor.
+     *
+     * @param \Psr\Http\Message\StreamFactoryInterface $streamFactory
+     */
+    public function __construct(StreamFactoryInterface $streamFactory)
+    {
+        $this->streamFactory = $streamFactory;
+    }
+
+    /**
+     * @param string $fileName Name without path
+     * @param string $contents
+     *
+     * @return FileItemInterface
+     */
+    public function fromString(string $fileName, string $contents): FileItemInterface
+    {
+        return new FileItem($fileName, $this->streamFactory->createStream($contents));
+    }
+
+    /**
+     * @param string $fileName Name with or without path
+     *
+     * @return FileItemInterface
+     */
+    public function fromFile(string $fileName): FileItemInterface
+    {
+        return new FileItem(basename($fileName), $this->streamFactory->createStreamFromFile($fileName));
+    }
+}
diff --git a/src/Factory/RequestFactory.php b/src/Factory/RequestFactory.php
index 101c32d..9da562e 100644
--- a/src/Factory/RequestFactory.php
+++ b/src/Factory/RequestFactory.php
@@ -12,11 +12,19 @@
  */
 namespace RetailCrm\Factory;
 
-use Psr\Http\Message\RequestFactoryInterface as BaseFactoryInterface;
+use JMS\Serializer\SerializerInterface;
+use Psr\Http\Message\RequestInterface;
+use RetailCrm\Component\Exception\FactoryException;
+use RetailCrm\Component\Psr7\MultipartStream;
 use RetailCrm\Interfaces\AppDataInterface;
+use RetailCrm\Interfaces\AuthenticatorInterface;
+use RetailCrm\Interfaces\FileItemInterface;
 use RetailCrm\Interfaces\RequestFactoryInterface;
 use RetailCrm\Interfaces\RequestSignerInterface;
 use RetailCrm\Model\Request\BaseRequest;
+use RetailCrm\Service\RequestDataFilter;
+use Shieldon\Psr7\Request;
+use Shieldon\Psr7\Uri;
 
 /**
  * Class RequestFactory
@@ -36,29 +44,120 @@ class RequestFactory implements RequestFactoryInterface
     private $signer;
 
     /**
-     * @var BaseFactoryInterface $requestFactory
+     * @var RequestDataFilter $filter
      */
-    private $requestFactory;
+    private $filter;
+
+    /**
+     * @var SerializerInterface|\JMS\Serializer\Serializer $serializer
+     */
+    private $serializer;
 
     /**
      * RequestFactory constructor.
      *
      * @param \RetailCrm\Interfaces\RequestSignerInterface $signer
-     * @param \Psr\Http\Message\RequestFactoryInterface    $requestFactory
+     * @param \RetailCrm\Service\RequestDataFilter         $filter
+     * @param \JMS\Serializer\SerializerInterface          $serializer
      */
-    public function __construct(RequestSignerInterface $signer, BaseFactoryInterface $requestFactory)
-    {
+    public function __construct(
+        RequestSignerInterface $signer,
+        RequestDataFilter $filter,
+        SerializerInterface $serializer
+    ) {
         $this->signer = $signer;
-        $this->requestFactory = $requestFactory;
+        $this->filter = $filter;
+        $this->serializer = $serializer;
     }
 
     /**
-     * @param \RetailCrm\Model\Request\BaseRequest   $request
-     * @param \RetailCrm\Interfaces\AppDataInterface $appData
+     * @param string                                       $endpoint
+     * @param \RetailCrm\Model\Request\BaseRequest         $request
+     * @param \RetailCrm\Interfaces\AppDataInterface       $appData
+     * @param \RetailCrm\Interfaces\AuthenticatorInterface $authenticator
+     *
+     * @return \Psr\Http\Message\RequestInterface
+     * @throws \RetailCrm\Component\Exception\FactoryException
      */
-    public function fromModel(BaseRequest $request, AppDataInterface $appData)
-    {
+    public function fromModel(
+        string $endpoint,
+        BaseRequest $request,
+        AppDataInterface $appData,
+        AuthenticatorInterface $authenticator
+    ): RequestInterface {
+        $authenticator->authenticate($request);
         $this->signer->sign($request, $appData);
-        // TODO: Implement this
+        $requestData = $this->serializer->toArray($request);
+        $requestHasBinaryData = $this->filter->hasBinaryFromRequestData($requestData);
+
+        if (empty($requestData)) {
+            throw new FactoryException('Empty request data');
+        }
+
+        if ($requestHasBinaryData) {
+            return $this->makeMultipartRequest($endpoint, $requestData);
+        }
+
+        return new Request(
+            'GET',
+            new Uri($endpoint . '?' . http_build_query($requestData)),
+            '',
+            self::defaultHeaders()
+        );
+    }
+
+    /**
+     * @param string $endpoint
+     * @param array  $contents
+     *
+     * @return \Psr\Http\Message\RequestInterface
+     */
+    private function makeMultipartRequest(string $endpoint, array $contents): RequestInterface
+    {
+        $prepared = [];
+
+        foreach ($contents as $param => $value) {
+            if ($value instanceof FileItemInterface) {
+                $prepared[] = [
+                    'name' => $param,
+                    'contents' => $value->getStream(),
+                    'filename' => $value->getFileName()
+                ];
+            } else {
+                $prepared[] = [
+                    'name' => $param,
+                    'contents' => $value
+                ];
+            }
+        }
+
+        return new Request(
+            'POST',
+            new Uri($endpoint),
+            new MultipartStream($prepared),
+            self::defaultHeaders()
+        );
+    }
+
+    private static function defaultHeaders(): array
+    {
+        return [
+            'HTTP_ACCEPT' => 'application/json,application/xml;q=0.9',
+            'HTTP_ACCEPT_CHARSET' => 'utf-8;q=0.7,*;q=0.3',
+            'HTTP_ACCEPT_LANGUAGE' => 'en-US,en;q=0.9,zh-TW;q=0.8,zh;q=0.7',
+            'HTTP_USER_AGENT' => 'Mozilla/5.0 (compatible; TopSdk; +http://retailcrm.pro)',
+            'HTTP_HOST' => '127.0.0.1',
+            'QUERY_STRING' => '',
+            'REMOTE_ADDR' => '127.0.0.1',
+            'REQUEST_METHOD' => 'GET',
+            'REQUEST_SCHEME' => 'http',
+            'REQUEST_TIME' => time(),
+            'REQUEST_TIME_FLOAT' => microtime(true),
+            'REQUEST_URI' => '',
+            'SCRIPT_NAME' => '',
+            'SERVER_NAME' => 'localhost',
+            'SERVER_PORT' => 80,
+            'SERVER_PROTOCOL' => 'HTTP/1.1',
+        ];
     }
 }
diff --git a/src/Factory/SerializationContextFactory.php b/src/Factory/SerializationContextFactory.php
new file mode 100644
index 0000000..cdd8d4e
--- /dev/null
+++ b/src/Factory/SerializationContextFactory.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * PHP version 7.3
+ *
+ * @category SerializationContextFactory
+ * @package  RetailCrm\Factory
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
+namespace RetailCrm\Factory;
+
+use JMS\Serializer\ContextFactory\SerializationContextFactoryInterface;
+use JMS\Serializer\SerializationContext;
+
+/**
+ * Class SerializationContextFactory
+ *
+ * @category SerializationContextFactory
+ * @package  RetailCrm\Factory
+ * @author   RetailDriver LLC <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      https://help.retailcrm.ru
+ */
+class SerializationContextFactory implements SerializationContextFactoryInterface
+{
+    /**
+     * @return \JMS\Serializer\SerializationContext
+     */
+    public function createSerializationContext(): SerializationContext
+    {
+        return SerializationContext::create()->setSerializeNull(false);
+    }
+}
diff --git a/src/Factory/SerializerFactory.php b/src/Factory/SerializerFactory.php
new file mode 100644
index 0000000..f757f41
--- /dev/null
+++ b/src/Factory/SerializerFactory.php
@@ -0,0 +1,139 @@
+<?php
+
+/**
+ * PHP version 7.3
+ *
+ * @category SerializerFactory
+ * @package  RetailCrm\Factory
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
+namespace RetailCrm\Factory;
+
+use JMS\Serializer\GraphNavigatorInterface;
+use JMS\Serializer\Handler\HandlerRegistry;
+use JMS\Serializer\Serializer;
+use JMS\Serializer\SerializerBuilder;
+use JMS\Serializer\SerializerInterface;
+use Psr\Container\ContainerInterface;
+use RetailCrm\Component\Constants;
+use RetailCrm\Interfaces\FactoryInterface;
+
+/**
+ * Class SerializerFactory
+ *
+ * @category SerializerFactory
+ * @package  RetailCrm\Factory
+ * @author   RetailDriver LLC <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      https://help.retailcrm.ru
+ */
+class SerializerFactory implements FactoryInterface
+{
+    /**
+     * @var \Psr\Container\ContainerInterface $container
+     */
+    private $container;
+
+    /**
+     * SerializerFactory constructor.
+     *
+     * @param \Psr\Container\ContainerInterface $container
+     */
+    public function __construct(ContainerInterface $container)
+    {
+        $this->container = $container;
+    }
+
+    /**
+     * @param \Psr\Container\ContainerInterface $container
+     *
+     * @return \RetailCrm\Factory\SerializerFactory
+     */
+    public static function withContainer(ContainerInterface $container): FactoryInterface
+    {
+        return new self($container);
+    }
+
+    /**
+     * @return \JMS\Serializer\Serializer
+     */
+    public function create(): Serializer
+    {
+        $container = $this->container;
+
+        return SerializerBuilder::create()
+            ->configureHandlers(function(HandlerRegistry $registry) use ($container) {
+                $returnNull = function($visitor, $obj, array $type) {
+                    return null;
+                };
+                $returnSame = function($visitor, $obj, array $type) {
+                    return $obj;
+                };
+
+                $registry->registerHandler(
+                    GraphNavigatorInterface::DIRECTION_SERIALIZATION,
+                    'RequestDtoInterface',
+                    'json',
+                    function($visitor, $obj, array $type) use ($container) {
+                        /** @var SerializerInterface $serializer */
+                        $serializer = $container->get(Constants::SERIALIZER);
+
+                        return $serializer->serialize($obj, 'json');
+                    }
+                );
+                $registry->registerHandler(
+                    GraphNavigatorInterface::DIRECTION_DESERIALIZATION,
+                    'RequestDtoInterface',
+                    'json',
+                    $returnNull
+                );
+                $registry->registerHandler(
+                    GraphNavigatorInterface::DIRECTION_SERIALIZATION,
+                    'RequestDtoInterface',
+                    'xml',
+                    function($visitor, $obj, array $type) use ($container) {
+                        /** @var SerializerInterface $serializer */
+                        $serializer = $container->get(Constants::SERIALIZER);
+
+                        return $serializer->serialize($obj, 'xml');
+                    }
+                );
+                $registry->registerHandler(
+                    GraphNavigatorInterface::DIRECTION_DESERIALIZATION,
+                    'RequestDtoInterface',
+                    'xml',
+                    $returnNull
+                );
+                $registry->registerHandler(
+                    GraphNavigatorInterface::DIRECTION_SERIALIZATION,
+                    'FileItemInterface',
+                    'json',
+                    $returnSame
+                );
+                $registry->registerHandler(
+                    GraphNavigatorInterface::DIRECTION_DESERIALIZATION,
+                    'FileItemInterface',
+                    'json',
+                    $returnNull
+                );
+                $registry->registerHandler(
+                    GraphNavigatorInterface::DIRECTION_SERIALIZATION,
+                    'FileItemInterface',
+                    'xml',
+                    $returnSame
+                );
+                $registry->registerHandler(
+                    GraphNavigatorInterface::DIRECTION_DESERIALIZATION,
+                    'FileItemInterface',
+                    'xml',
+                    $returnNull
+                );
+            })->addDefaultHandlers()
+            ->setSerializationContextFactory(new SerializationContextFactory())
+            ->build();
+    }
+}
diff --git a/src/Factory/UploadedFileFactory.php b/src/Factory/UploadedFileFactory.php
deleted file mode 100644
index e529aca..0000000
--- a/src/Factory/UploadedFileFactory.php
+++ /dev/null
@@ -1,59 +0,0 @@
-<?php
-
-/**
- * PHP version 7.3
- *
- * @category UploadedFileFactory
- * @package  RetailCrm\Factory
- * @author   RetailCRM <integration@retailcrm.ru>
- * @license  MIT
- * @link     http://retailcrm.ru
- * @see      http://help.retailcrm.ru
- */
-namespace RetailCrm\Factory;
-
-use Psr\Http\Message\StreamFactoryInterface;
-use Psr\Http\Message\UploadedFileFactoryInterface as BaseUploadedFileFactoryInterface;
-use Psr\Http\Message\UploadedFileInterface;
-use RetailCrm\Interfaces\UploadedFileFactoryInterface;
-
-/**
- * Class UploadedFileFactory
- *
- * @category UploadedFileFactory
- * @package  RetailCrm\Factory
- * @author   RetailDriver LLC <integration@retailcrm.ru>
- * @license  MIT
- * @link     http://retailcrm.ru
- * @see      https://help.retailcrm.ru
- */
-class UploadedFileFactory implements UploadedFileFactoryInterface
-{
-    /** @var BaseUploadedFileFactoryInterface $baseFactory */
-    private $baseFactory;
-
-    /** @var StreamFactoryInterface $streamFactory */
-    private $streamFactory;
-
-    /**
-     * UploadedFileFactory constructor.
-     *
-     * @param \Psr\Http\Message\UploadedFileFactoryInterface $baseFactory
-     * @param \Psr\Http\Message\StreamFactoryInterface       $streamFactory
-     */
-    public function __construct(BaseUploadedFileFactoryInterface $baseFactory, StreamFactoryInterface $streamFactory)
-    {
-        $this->baseFactory   = $baseFactory;
-        $this->streamFactory = $streamFactory;
-    }
-
-    /**
-     * @param string $fileName
-     *
-     * @return \Psr\Http\Message\UploadedFileInterface
-     */
-    public function create(string $fileName): UploadedFileInterface
-    {
-        return $this->baseFactory->createUploadedFile($this->streamFactory->createStreamFromFile($fileName));
-    }
-}
diff --git a/src/Interfaces/FileItemFactoryInterface.php b/src/Interfaces/FileItemFactoryInterface.php
new file mode 100644
index 0000000..7495953
--- /dev/null
+++ b/src/Interfaces/FileItemFactoryInterface.php
@@ -0,0 +1,42 @@
+<?php
+
+/**
+ * PHP version 7.3
+ *
+ * @category FactoryInterface
+ * @package  RetailCrm\Interfaces
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
+
+namespace RetailCrm\Interfaces;
+
+/**
+ * Interface FileItemFactoryInterface
+ *
+ * @category FileItemFactoryInterface
+ * @package  RetailCrm\Interfaces
+ * @author   RetailDriver LLC <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      https://help.retailcrm.ru
+ */
+interface FileItemFactoryInterface
+{
+    /**
+     * @param string $fileName Name without path
+     * @param string $contents
+     *
+     * @return FileItemInterface
+     */
+    public function fromString(string $fileName, string $contents): FileItemInterface;
+
+    /**
+     * @param string $fileName Name with or without path
+     *
+     * @return FileItemInterface
+     */
+    public function fromFile(string $fileName): FileItemInterface;
+}
diff --git a/src/Interfaces/UploadedFileFactoryInterface.php b/src/Interfaces/FileItemInterface.php
similarity index 55%
rename from src/Interfaces/UploadedFileFactoryInterface.php
rename to src/Interfaces/FileItemInterface.php
index ff77cca..1e24273 100644
--- a/src/Interfaces/UploadedFileFactoryInterface.php
+++ b/src/Interfaces/FileItemInterface.php
@@ -3,7 +3,7 @@
 /**
  * PHP version 7.3
  *
- * @category UploadedFileFactoryInterface
+ * @category FileItemInterface
  * @package  RetailCrm\Interfaces
  * @author   RetailCRM <integration@retailcrm.ru>
  * @license  MIT
@@ -13,24 +13,27 @@
 
 namespace RetailCrm\Interfaces;
 
-use Psr\Http\Message\UploadedFileInterface;
+use Psr\Http\Message\StreamInterface;
 
 /**
- * Interface UploadedFileFactoryInterface
+ * Interface FileItemInterface
  *
- * @category UploadedFileFactoryInterface
+ * @category FileItemInterface
  * @package  RetailCrm\Interfaces
  * @author   RetailDriver LLC <integration@retailcrm.ru>
  * @license  MIT
  * @link     http://retailcrm.ru
  * @see      https://help.retailcrm.ru
  */
-interface UploadedFileFactoryInterface
+interface FileItemInterface
 {
     /**
-     * @param string $fileName
-     *
-     * @return \Psr\Http\Message\UploadedFileInterface
+     * @return string
      */
-    public function create(string $fileName): UploadedFileInterface;
+    public function getFileName(): string;
+
+    /**
+     * @return \Psr\Http\Message\StreamInterface
+     */
+    public function getStream(): StreamInterface;
 }
diff --git a/src/Interfaces/RequestDtoInterface.php b/src/Interfaces/RequestDtoInterface.php
new file mode 100644
index 0000000..0808548
--- /dev/null
+++ b/src/Interfaces/RequestDtoInterface.php
@@ -0,0 +1,28 @@
+<?php
+
+/**
+ * PHP version 7.3
+ *
+ * @category RequestDtoInterface
+ * @package  RetailCrm\Interfaces
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
+
+namespace RetailCrm\Interfaces;
+
+/**
+ * Interface RequestDtoInterface
+ *
+ * @category RequestDtoInterface
+ * @package  RetailCrm\Interfaces
+ * @author   RetailDriver LLC <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      https://help.retailcrm.ru
+ */
+interface RequestDtoInterface
+{
+}
diff --git a/src/Interfaces/RequestFactoryInterface.php b/src/Interfaces/RequestFactoryInterface.php
index 407957d..b5fffc5 100644
--- a/src/Interfaces/RequestFactoryInterface.php
+++ b/src/Interfaces/RequestFactoryInterface.php
@@ -13,6 +13,7 @@
 
 namespace RetailCrm\Interfaces;
 
+use Psr\Http\Message\RequestInterface;
 use RetailCrm\Model\Request\BaseRequest;
 
 /**
@@ -28,10 +29,17 @@ use RetailCrm\Model\Request\BaseRequest;
 interface RequestFactoryInterface
 {
     /**
-     * @param \RetailCrm\Model\Request\BaseRequest   $request
-     * @param \RetailCrm\Interfaces\AppDataInterface $appData
+     * @param string                                       $endpoint
+     * @param \RetailCrm\Model\Request\BaseRequest         $request
+     * @param \RetailCrm\Interfaces\AppDataInterface       $appData
+     * @param \RetailCrm\Interfaces\AuthenticatorInterface $authenticator
      *
-     * @return mixed
+     * @return RequestInterface
      */
-    public function fromModel(BaseRequest $request, AppDataInterface $appData);
+    public function fromModel(
+        string $endpoint,
+        BaseRequest $request,
+        AppDataInterface $appData,
+        AuthenticatorInterface $authenticator
+    ): RequestInterface;
 }
diff --git a/src/Model/FileItem.php b/src/Model/FileItem.php
new file mode 100644
index 0000000..aa8f271
--- /dev/null
+++ b/src/Model/FileItem.php
@@ -0,0 +1,63 @@
+<?php
+
+/**
+ * PHP version 7.3
+ *
+ * @category FileItem
+ * @package  RetailCrm\Model
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
+namespace RetailCrm\Model;
+
+use Psr\Http\Message\StreamInterface;
+use RetailCrm\Interfaces\FileItemInterface;
+
+/**
+ * Class FileItem
+ *
+ * @category FileItem
+ * @package  RetailCrm\Model
+ * @author   RetailDriver LLC <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      https://help.retailcrm.ru
+ */
+class FileItem implements FileItemInterface
+{
+    /** @var string $fileName */
+    private $fileName;
+
+    /** @var StreamInterface */
+    private $stream;
+
+    /**
+     * FileItem constructor.
+     *
+     * @param string                            $fileName
+     * @param \Psr\Http\Message\StreamInterface $stream
+     */
+    public function __construct(string $fileName, StreamInterface $stream)
+    {
+        $this->fileName = $fileName;
+        $this->stream = $stream;
+    }
+
+    /**
+     * @return string
+     */
+    public function getFileName(): string
+    {
+        return $this->fileName;
+    }
+
+    /**
+     * @return \Psr\Http\Message\StreamInterface
+     */
+    public function getStream(): StreamInterface
+    {
+        return $this->stream;
+    }
+}
diff --git a/src/Service/RequestDataFilter.php b/src/Service/RequestDataFilter.php
new file mode 100644
index 0000000..241343d
--- /dev/null
+++ b/src/Service/RequestDataFilter.php
@@ -0,0 +1,59 @@
+<?php
+
+/**
+ * PHP version 7.3
+ *
+ * @category RequestDataFilter
+ * @package  RetailCrm\Service
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
+namespace RetailCrm\Service;
+
+use RetailCrm\Interfaces\FileItemInterface;
+
+/**
+ * Class RequestDataFilter
+ *
+ * @category RequestDataFilter
+ * @package  RetailCrm\Service
+ * @author   RetailDriver LLC <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      https://help.retailcrm.ru
+ */
+class RequestDataFilter
+{
+    /**
+     * @param array $params
+     *
+     * @return array
+     */
+    public function filterBinaryFromRequestData(array $params): array
+    {
+        return array_filter(array_filter(
+            $params,
+            static function ($item) {
+                return !($item instanceof FileItemInterface);
+            }
+        ));
+    }
+
+    /**
+     * @param array $params
+     *
+     * @return bool
+     */
+    public function hasBinaryFromRequestData(array $params): bool
+    {
+        foreach ($params as $item) {
+            if ($item instanceof FileItemInterface) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+}
diff --git a/src/Service/RequestSigner.php b/src/Service/RequestSigner.php
index 36c4deb..ffbb579 100644
--- a/src/Service/RequestSigner.php
+++ b/src/Service/RequestSigner.php
@@ -34,15 +34,22 @@ class RequestSigner implements RequestSignerInterface
     /**
      * @var SerializerInterface|\JMS\Serializer\Serializer $serializer
      */
-    public $serializer;
+    private $serializer;
+
+    /**
+     * @var RequestDataFilter $filter
+     */
+    private $filter;
 
     /**
      * RequestSigner constructor.
      *
-     * @param \JMS\Serializer\SerializerInterface $serializer
+     * @param \JMS\Serializer\SerializerInterface  $serializer
+     * @param \RetailCrm\Service\RequestDataFilter $filter
      */
-    public function __construct(SerializerInterface $serializer)
+    public function __construct(SerializerInterface $serializer, RequestDataFilter $filter)
     {
+        $this->filter = $filter;
         $this->serializer = $serializer;
     }
 
@@ -55,7 +62,7 @@ class RequestSigner implements RequestSignerInterface
     public function sign(BaseRequest $request, AppDataInterface $appData): void
     {
         $stringToBeSigned = '';
-        $params           = $this->getRequestData($request);
+        $params           = $this->getDataForSigning($request);
 
         foreach ($params as $param => $value) {
             $stringToBeSigned .= $param . $value;
@@ -81,9 +88,9 @@ class RequestSigner implements RequestSignerInterface
      *
      * @return array
      */
-    private function getRequestData(BaseRequest $request): array
+    private function getDataForSigning(BaseRequest $request): array
     {
-        $params = array_filter($this->serializer->toArray($request));
+        $params = $this->filter->filterBinaryFromRequestData($this->serializer->toArray($request));
         unset($params['sign']);
         ksort($params);
 
diff --git a/src/TopClient/Client.php b/src/TopClient/Client.php
index 2fa8ea6..d29900d 100644
--- a/src/TopClient/Client.php
+++ b/src/TopClient/Client.php
@@ -14,6 +14,7 @@ namespace RetailCrm\TopClient;
 
 use JMS\Serializer\SerializerInterface;
 use Psr\Http\Client\ClientInterface;
+use RetailCrm\Component\ServiceLocator;
 use RetailCrm\Interfaces\AppDataInterface;
 use RetailCrm\Interfaces\AuthenticatorInterface;
 use RetailCrm\Interfaces\RequestFactoryInterface;
@@ -63,6 +64,11 @@ class Client
      */
     protected $serializer;
 
+    /**
+     * @var \RetailCrm\Component\ServiceLocator $serviceLocator
+     */
+    protected $serviceLocator;
+
     /**
      * Client constructor.
      *
@@ -106,4 +112,20 @@ class Client
     {
         $this->requestFactory = $requestFactory;
     }
+
+    /**
+     * @param \RetailCrm\Component\ServiceLocator $serviceLocator
+     */
+    public function setServiceLocator(ServiceLocator $serviceLocator): void
+    {
+        $this->serviceLocator = $serviceLocator;
+    }
+
+    /**
+     * @return \RetailCrm\Component\ServiceLocator
+     */
+    public function getServiceLocator(): ServiceLocator
+    {
+        return $this->serviceLocator;
+    }
 }
diff --git a/tests/RetailCrm/Test/TestCase.php b/tests/RetailCrm/Test/TestCase.php
index 7a89a99..4fd38ff 100644
--- a/tests/RetailCrm/Test/TestCase.php
+++ b/tests/RetailCrm/Test/TestCase.php
@@ -2,9 +2,15 @@
 
 namespace RetailCrm\Test;
 
+use DateTime;
 use Psr\Container\ContainerInterface;
+use RetailCrm\Component\AppData;
+use RetailCrm\Component\Authenticator\TokenAuthenticator;
 use RetailCrm\Component\Environment;
 use RetailCrm\Factory\ContainerFactory;
+use RetailCrm\Factory\FileItemFactory;
+use RetailCrm\Interfaces\AppDataInterface;
+use RetailCrm\Interfaces\AuthenticatorInterface;
 
 /**
  * Class TestCase
@@ -20,7 +26,12 @@ class TestCase extends \PHPUnit\Framework\TestCase
 {
     private $container;
 
-    public function getContainer($recreate = false): ContainerInterface
+    /**
+     * @param bool $recreate
+     *
+     * @return \Psr\Container\ContainerInterface
+     */
+    protected function getContainer($recreate = false): ContainerInterface
     {
         if (null === $this->container || $recreate) {
             $this->container = ContainerFactory::withEnv(Environment::TEST)
@@ -30,4 +41,55 @@ class TestCase extends \PHPUnit\Framework\TestCase
 
         return $this->container;
     }
+
+    /**
+     * @return \RetailCrm\Interfaces\AppDataInterface
+     */
+    protected function getAppData(): AppDataInterface
+    {
+        return AppData::create(AppData::OVERSEAS_ENDPOINT, 'appKey', 'helloworld');
+    }
+
+    /**
+     * @param string $appKey
+     * @param string $token
+     *
+     * @return \RetailCrm\Interfaces\AuthenticatorInterface
+     */
+    protected function getAuthenticator(string $appKey = 'appKey', string $token = 'token'): AuthenticatorInterface
+    {
+        return new TokenAuthenticator($appKey, $token);
+    }
+
+    /**
+     * @param string $signMethod
+     *
+     * @param bool   $withFile
+     *
+     * @return \RetailCrm\Test\TestSignerRequest
+     */
+    protected function getTestRequest(string $signMethod, bool $withFile = false): TestSignerRequest
+    {
+        $request = new TestSignerRequest();
+        $request->method = 'aliexpress.solution.order.fulfill';
+        $request->appKey = '12345678';
+        $request->session = 'test';
+        $request->timestamp = DateTime::createFromFormat('Y-m-d H:i:s', '2016-01-01 12:00:00');
+        $request->signMethod = $signMethod;
+        $request->serviceName = 'SPAIN_LOCAL_CORREOS';
+        $request->outRef = '1000006270175804';
+        $request->sendType = 'all';
+        $request->logisticsNo = 'ES2019COM0000123456';
+
+        if ($withFile) {
+            /** @var FileItemFactory $factory */
+            $factory = $this->getContainer()->get(FileItemFactory::class);
+            $request->document = $factory->fromString(
+                'file.txt',
+                'The quick brown fox jumps over the lazy dog'
+            );
+        }
+
+        return $request;
+    }
 }
diff --git a/tests/RetailCrm/Test/TestSignerRequest.php b/tests/RetailCrm/Test/TestSignerRequest.php
index 90711cd..ae085b5 100644
--- a/tests/RetailCrm/Test/TestSignerRequest.php
+++ b/tests/RetailCrm/Test/TestSignerRequest.php
@@ -13,6 +13,8 @@
 namespace RetailCrm\Test;
 
 use JMS\Serializer\Annotation as JMS;
+use Psr\Http\Message\UploadedFileInterface;
+use RetailCrm\Interfaces\FileItemInterface;
 use RetailCrm\Model\Request\BaseRequest;
 use Symfony\Component\Validator\Constraints as Assert;
 
@@ -63,4 +65,12 @@ class TestSignerRequest extends BaseRequest
      * @Assert\NotBlank()
      */
     public $logisticsNo;
+
+    /**
+     * @var FileItemInterface $document
+     *
+     * @JMS\Type("FileItemInterface")
+     * @JMS\SerializedName("document")
+     */
+    public $document;
 }
diff --git a/tests/RetailCrm/Tests/Component/ClientFactoryTest.php b/tests/RetailCrm/Tests/Component/ClientFactoryTest.php
index bc61203..8a2f7c5 100644
--- a/tests/RetailCrm/Tests/Component/ClientFactoryTest.php
+++ b/tests/RetailCrm/Tests/Component/ClientFactoryTest.php
@@ -14,6 +14,7 @@ namespace RetailCrm\Tests\Component;
 
 use RetailCrm\Component\AppData;
 use RetailCrm\Component\Authenticator\TokenAuthenticator;
+use RetailCrm\Component\ServiceLocator;
 use RetailCrm\Factory\ClientFactory;
 use RetailCrm\Test\TestCase;
 use RetailCrm\TopClient\Client;
@@ -38,5 +39,6 @@ class ClientFactoryTest extends TestCase
             ->create();
 
         self::assertInstanceOf(Client::class, $client);
+        self::assertInstanceOf(ServiceLocator::class, $client->getServiceLocator());
     }
 }
diff --git a/tests/RetailCrm/Tests/Factory/RequestFactoryTest.php b/tests/RetailCrm/Tests/Factory/RequestFactoryTest.php
new file mode 100644
index 0000000..7729222
--- /dev/null
+++ b/tests/RetailCrm/Tests/Factory/RequestFactoryTest.php
@@ -0,0 +1,67 @@
+<?php
+
+/**
+ * PHP version 7.3
+ *
+ * @category RequestFactoryTest
+ * @package  RetailCrm\Tests\Factory
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
+namespace RetailCrm\Tests\Factory;
+
+use Psr\Http\Message\RequestInterface;
+use RetailCrm\Component\Constants;
+use RetailCrm\Factory\RequestFactory;
+use RetailCrm\Component\AppData;
+use RetailCrm\Test\TestCase;
+
+/**
+ * Class RequestFactoryTest
+ *
+ * @category RequestFactoryTest
+ * @package  RetailCrm\Tests\Factory
+ * @author   RetailDriver LLC <integration@retailcrm.ru>
+ * @license  MIT
+ * @link     http://retailcrm.ru
+ * @see      https://help.retailcrm.ru
+ */
+class RequestFactoryTest extends TestCase
+{
+    public function testFromModelGet(): void
+    {
+        /** @var RequestFactory $factory */
+        $factory = $this->getContainer()->get(RequestFactory::class);
+        $request = $factory->fromModel(
+            AppData::OVERSEAS_ENDPOINT,
+            $this->getTestRequest(Constants::SIGN_TYPE_HMAC),
+            $this->getAppData(),
+            $this->getAuthenticator()
+        );
+        $uri = $request->getUri();
+        $contents = $request->getBody()->getContents();
+
+        self::assertEmpty($contents);
+        self::assertNotEmpty($uri->getQuery());
+        self::assertNotFalse(stripos($uri->getQuery(), 'SPAIN_LOCAL_CORREOS'));
+    }
+
+    public function testFromModelPost(): void
+    {
+        /** @var RequestFactory $factory */
+        $factory = $this->getContainer()->get(RequestFactory::class);
+        $request = $factory->fromModel(
+            AppData::OVERSEAS_ENDPOINT,
+            $this->getTestRequest(Constants::SIGN_TYPE_HMAC, true),
+            $this->getAppData(),
+            $this->getAuthenticator()
+        );
+        $uri = $request->getUri();
+        $contents = $request->getBody()->getContents();
+
+        self::assertEmpty($uri->getQuery());
+        self::assertNotFalse(stripos($contents, 'The quick brown fox jumps over the lazy dog'));
+    }
+}
diff --git a/tests/RetailCrm/Tests/Service/RequestSignerTest.php b/tests/RetailCrm/Tests/Service/RequestSignerTest.php
index 75cd3f9..c9560c1 100644
--- a/tests/RetailCrm/Tests/Service/RequestSignerTest.php
+++ b/tests/RetailCrm/Tests/Service/RequestSignerTest.php
@@ -12,9 +12,7 @@
  */
 namespace RetailCrm\Tests\Service;
 
-use DateTime;
 use RetailCrm\Component\AppData;
-use RetailCrm\Component\Authenticator\TokenAuthenticator;
 use RetailCrm\Component\Constants;
 use RetailCrm\Interfaces\AppDataInterface;
 use RetailCrm\Interfaces\RequestSignerInterface;
@@ -52,40 +50,29 @@ class RequestSignerTest extends TestCase
 
     public function signDataProvider(): array
     {
-        $appData = AppData::create(AppData::OVERSEAS_ENDPOINT, 'appKey', 'helloworld');
+        $appData = $this->getAppData();
 
         return [
             [
-                $this->getRequestWithSignMethod(Constants::SIGN_TYPE_MD5),
+                $this->getTestRequest(Constants::SIGN_TYPE_MD5),
                 $appData,
                 '4BC79C5FAA1B5E254E95A97E65BACEAB'
             ],
             [
-                $this->getRequestWithSignMethod(Constants::SIGN_TYPE_HMAC),
+                $this->getTestRequest(Constants::SIGN_TYPE_HMAC),
+                $appData,
+                '497FA7FCAD98F4F335EFAE2451F8291D'
+            ],
+            [
+                $this->getTestRequest(Constants::SIGN_TYPE_MD5, true),
+                $appData,
+                '4BC79C5FAA1B5E254E95A97E65BACEAB'
+            ],
+            [
+                $this->getTestRequest(Constants::SIGN_TYPE_HMAC, true),
                 $appData,
                 '497FA7FCAD98F4F335EFAE2451F8291D'
             ]
         ];
     }
-
-    /**
-     * @param string $signMethod
-     *
-     * @return \RetailCrm\Test\TestSignerRequest
-     */
-    private function getRequestWithSignMethod(string $signMethod): TestSignerRequest
-    {
-        $request = new TestSignerRequest();
-        $request->method = 'aliexpress.solution.order.fulfill';
-        $request->appKey = '12345678';
-        $request->session = 'test';
-        $request->timestamp = DateTime::createFromFormat('Y-m-d H:i:s', '2016-01-01 12:00:00');
-        $request->signMethod = $signMethod;
-        $request->serviceName = 'SPAIN_LOCAL_CORREOS';
-        $request->outRef = '1000006270175804';
-        $request->sendType = 'all';
-        $request->logisticsNo = 'ES2019COM0000123456';
-
-        return $request;
-    }
 }