diff --git a/Exception/RetailCrmApiException.php b/Exception/RetailCrmApiException.php
new file mode 100644
index 0000000..5eeaf5c
--- /dev/null
+++ b/Exception/RetailCrmApiException.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace RetailCrm\DeliveryModuleBundle\Exception;
+
+class RetailCrmApiException extends \Exception
+{
+}
diff --git a/Resources/translations/validators.en.yaml b/Resources/translations/validators.en.yaml
new file mode 100644
index 0000000..0c3f989
--- /dev/null
+++ b/Resources/translations/validators.en.yaml
@@ -0,0 +1,11 @@
+integration_module_access:
+    server_unreachable_exception: 'Failed to connect to the integration server'
+    module_access_exception: 'Invalid login or password'
+
+retailcrm_access:
+    access_denied: 'Access to the method "%method%" is denied'
+    curl_exception: 'Failed to connect to API'
+    service_unavailable: 'Service is temporarily unavailable'
+    invalid_json: 'API returned a response in an unsupported format'
+    requires_https: 'API address must start with https'
+    wrong_api_key: 'Invalid API key'
diff --git a/Resources/translations/validators.es.yaml b/Resources/translations/validators.es.yaml
new file mode 100644
index 0000000..ed0cf55
--- /dev/null
+++ b/Resources/translations/validators.es.yaml
@@ -0,0 +1,11 @@
+integration_module_access:
+    server_unreachable_exception: 'No se ha podido conectar al servidor de integración'
+    module_access_exception: 'El Usuario o la contraseña no es correcta'
+
+retailcrm_access:
+    access_denied: 'Acceso al método "%method%" está prohibido'
+    curl_exception: 'No se ha podido conectar al API'
+    service_unavailable: 'Servicio no está disponible temporalmente'
+    invalid_json: 'API ha devuelto la respuesta en el formato no soportado'
+    requires_https: 'Dirección del API tiene que comenzar con https'
+    wrong_api_key: 'El API-key no es correcto'
diff --git a/Resources/translations/validators.ru.yaml b/Resources/translations/validators.ru.yaml
new file mode 100644
index 0000000..432289b
--- /dev/null
+++ b/Resources/translations/validators.ru.yaml
@@ -0,0 +1,11 @@
+integration_module_access:
+    server_unreachable_exception: 'Не удалось подключиться к интеграционному серверу'
+    module_access_exception: 'Не верный логин или пароль'
+
+retailcrm_access:
+    access_denied: 'Доступ к методу "%method%" запрещен'
+    curl_exception: 'Не удалось подключиться к API'
+    service_unavailable: 'Сервис временно недоступен'
+    invalid_json: 'API вернуло ответ в неподдерживаемом формате'
+    requires_https: 'Адрес API должен начинаться с https'
+    wrong_api_key: 'Неверный API-ключ'
diff --git a/Service/ModuleManagerInterface.php b/Service/ModuleManagerInterface.php
index 0a40835..b168426 100644
--- a/Service/ModuleManagerInterface.php
+++ b/Service/ModuleManagerInterface.php
@@ -25,6 +25,8 @@ interface ModuleManagerInterface
 
     public function setAccount(Account $account): self;
 
+    public function checkAccess(): bool;
+
     public function updateModuleConfiguration(): bool;
 
     public function calculateDelivery(RequestCalculate $data): array;
diff --git a/Validator/Constraints/IntegrationModuleAccess.php b/Validator/Constraints/IntegrationModuleAccess.php
new file mode 100644
index 0000000..514cc5b
--- /dev/null
+++ b/Validator/Constraints/IntegrationModuleAccess.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace RetailCrm\DeliveryModuleBundle\Validator\Constraints;
+
+use Symfony\Component\Validator\Constraint;
+
+/**
+ * @Annotation
+ * @Target({"CLASS"})
+ */
+class IntegrationModuleAccess extends Constraint
+{
+    /** @var string */
+    public $path = 'login';
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getTargets()
+    {
+        return self::CLASS_CONSTRAINT;
+    }
+}
diff --git a/Validator/Constraints/IntegrationModuleAccessValidator.php b/Validator/Constraints/IntegrationModuleAccessValidator.php
new file mode 100644
index 0000000..177d5ce
--- /dev/null
+++ b/Validator/Constraints/IntegrationModuleAccessValidator.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace RetailCrm\DeliveryModuleBundle\Validator\Constraints;
+
+use RetailCrm\DeliveryModuleBundle\Exception\AbstractModuleException;
+use RetailCrm\DeliveryModuleBundle\Exception\ServerUnreachableException;
+use RetailCrm\DeliveryModuleBundle\Service\ModuleManagerInterface;
+use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\ConstraintValidator;
+use Symfony\Component\Validator\Exception\UnexpectedTypeException;
+
+class IntegrationModuleAccessValidator extends ConstraintValidator
+{
+    /** @var ModuleManagerInterface */
+    private $moduleManager;
+
+    public function __construct(ModuleManagerInterface $moduleManager)
+    {
+        $this->moduleManager = $moduleManager;
+    }
+
+    public function validate($account, Constraint $constraint)
+    {
+        if (!($constraint instanceof IntegrationModuleAccess)) {
+            throw new UnexpectedTypeException($constraint, IntegrationModuleAccess::class);
+        }
+
+        try {
+            $this->moduleManager->checkAccess();
+        } catch (ServerUnreachableException $e) {
+            $this->context
+                ->buildViolation('integration_module_access.server_unreachable_exception')
+                ->atPath($constraint->path)
+                ->addViolation()
+            ;
+        } catch (AbstractModuleException $e) {
+            $this->context
+                ->buildViolation('integration_module_access.module_access_exception')
+                ->atPath($constraint->path)
+                ->addViolation()
+            ;
+        }
+    }
+}
diff --git a/Validator/Constraints/RetailCrmAccess.php b/Validator/Constraints/RetailCrmAccess.php
new file mode 100644
index 0000000..74811f9
--- /dev/null
+++ b/Validator/Constraints/RetailCrmAccess.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Validator\Constraints;
+
+use Symfony\Component\Validator\Constraint;
+
+/**
+ * @Annotation
+ * @Target({"CLASS"})
+ */
+class RetailCrmAccess extends Constraint
+{
+    /** @var array */
+    public $requiredApiMethods = [];
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getTargets()
+    {
+        return self::CLASS_CONSTRAINT;
+    }
+}
diff --git a/Validator/Constraints/RetailCrmAccessValidator.php b/Validator/Constraints/RetailCrmAccessValidator.php
new file mode 100644
index 0000000..59ff962
--- /dev/null
+++ b/Validator/Constraints/RetailCrmAccessValidator.php
@@ -0,0 +1,80 @@
+<?php
+
+namespace App\Validator\Constraints;
+
+use RetailCrm\DeliveryModuleBundle\Exception\RetailCrmApiException;
+use RetailCrm\DeliveryModuleBundle\Service\ModuleManagerInterface;
+use RetailCrm\Exception\CurlException;
+use RetailCrm\Exception\InvalidJsonException;
+use RetailCrm\Exception\LimitException;
+use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\ConstraintValidator;
+use Symfony\Component\Validator\Exception\UnexpectedTypeException;
+
+class RetailCrmAccessValidator extends ConstraintValidator
+{
+    /** @var ModuleManagerInterface */
+    private $moduleManager;
+
+    public function __construct(ModuleManagerInterface $moduleManager)
+    {
+        $this->moduleManager = $moduleManager;
+    }
+
+    public function validate($account, Constraint $constraint)
+    {
+        if (!($constraint instanceof RetailCrmAccess)) {
+            throw new UnexpectedTypeException($constraint, RetailCrmAccess::class);
+        }
+
+        $client = $this->moduleManager->getRetailCrmClient();
+
+        try {
+            $response = $client->request->credentials();
+            if (!$response->isSuccessful()) {
+                throw new RetailCrmApiException($response->offsetGet('errorMsg'));
+            }
+
+            $credentials = $response->offsetGet('credentials');
+            foreach ($constraint->requiredApiMethods as $method) {
+                if (!in_array($method, $credentials)) {
+                    $this->context
+                        ->buildViolation('retailcrm_access.access_denied', ['%method%' => $method])
+                        ->atPath('crmApiKey')
+                        ->addViolation()
+                    ;
+                }
+            }
+        } catch (CurlException $e) {
+            $this->context
+                ->buildViolation('retailcrm_access.curl_exception')
+                ->atPath('crmUrl')
+                ->addViolation()
+            ;
+        } catch (LimitException $e) {
+            $this->context
+                ->buildViolation('retailcrm_access.service_unavailable')
+                ->atPath('crmUrl')
+                ->addViolation()
+            ;
+        } catch (InvalidJsonException $e) {
+            $this->context
+                ->buildViolation('retailcrm_access.invalid_json')
+                ->atPath('crmUrl')
+                ->addViolation()
+            ;
+        } catch (\InvalidArgumentException $e) {
+            $this->context
+                ->buildViolation('retailcrm_access.requires_https')
+                ->atPath('crmUrl')
+                ->addViolation()
+            ;
+        } catch (RetailCrmApiException $e) {
+            $this->context
+                ->buildViolation('retailcrm_access.wrong_api_key')
+                ->atPath('crmUrl')
+                ->addViolation()
+            ;
+        }
+    }
+}
diff --git a/composer.json b/composer.json
index 4fe2a89..80d4d99 100644
--- a/composer.json
+++ b/composer.json
@@ -24,9 +24,10 @@
     "symfony/framework-bundle": "^3.4|^4.0|^5.1",
     "symfony/lock": "^5.1",
     "symfony/routing": "^5.1",
-    "symfony/translation": "^5.1"
+    "symfony/translation": "^5.1",
+    "symfony/validator": "^5.1"
   },
   "require-dev": {
     "doctrine/doctrine-fixtures-bundle": "^3.3"
   }
-}
+}
\ No newline at end of file