diff --git a/admin/controller/extension/module/retailcrm.php b/admin/controller/extension/module/retailcrm.php
index 121a2ee..13533e7 100644
--- a/admin/controller/extension/module/retailcrm.php
+++ b/admin/controller/extension/module/retailcrm.php
@@ -546,7 +546,7 @@ class ControllerExtensionModuleRetailcrm extends Controller
 
         $response = $this->retailcrm->statisticUpdate();
 
-        if (!$response) {
+        if (!$response->isSuccessful()) {
             $this->_error['warning'] = $this->language->get('text_error_api');
         }
         
diff --git a/catalog/model/extension/retailcrm/order.php b/catalog/model/extension/retailcrm/order.php
index f3623bf..34afee1 100644
--- a/catalog/model/extension/retailcrm/order.php
+++ b/catalog/model/extension/retailcrm/order.php
@@ -62,7 +62,22 @@ class ModelExtensionRetailcrmOrder extends Model {
         $response = $this->retailcrm->ordersEdit($order);
 
         if ($this->settings[$this->moduleTitle . '_apiversion'] == 'v5' && $response->isSuccessful()) {
-            $this->editPayment($order_data, $order_id);
+            $response_order = $this->retailcrm->ordersGet($order_id);
+            if ($response_order->isSuccessful()) $order_info = $response_order['order'];
+
+            foreach ($order_info['payments'] as $payment_data) {
+                if ($payment_data['externalId'] == $order_id) {
+                    $payment = $payment_data;
+                }
+            }
+
+            if (isset($payment) && $payment['type'] != $this->settings[$this->moduleTitle . '_payment'][$order_data['payment_code']]) {
+                $response = $this->retailcrm->ordersPaymentDelete($payment['id']);
+
+                if ($response->isSuccessful()) {
+                    $this->createPayment($order_data, $order_id);
+                }
+            }
         }
     }
 
@@ -103,11 +118,13 @@ class ModelExtensionRetailcrmOrder extends Model {
             }
         }
 
-        if (isset($couponTotal)) $order['discount'] = $couponTotal;
         $order['createdAt'] = $order_data['date_added'];
 
         if ($this->settings[$this->moduleTitle . '_apiversion'] != 'v5') {
             $order['paymentType'] = $this->settings[$this->moduleTitle . '_payment'][$payment_code];
+            if (isset($couponTotal)) $order['discount'] = $couponTotal;
+        } else {
+            if (isset($couponTotal)) $order['discountManualAmount'] = $couponTotal;
         }
 
         $country = (isset($order_data['shipping_country'])) ? $order_data['shipping_country'] : '' ;
diff --git a/system/library/retailcrm/OpencartApiClient.php b/system/library/retailcrm/OpencartApiClient.php
index 9e8ac65..47a8684 100644
--- a/system/library/retailcrm/OpencartApiClient.php
+++ b/system/library/retailcrm/OpencartApiClient.php
@@ -309,6 +309,10 @@ class OpencartApiClient {
         return curl_exec($curl);
     }
 
+    /**
+     * Login api user for opencart version > 3.0
+     *
+     */
     private function apiLogin() {
         $this->load->model('user/api');
         $registry = new Registry();
diff --git a/system/library/retailcrm/RetailcrmApiClient3.php b/system/library/retailcrm/RetailcrmApiClient3.php
index 82631e0..7a6d7df 100644
--- a/system/library/retailcrm/RetailcrmApiClient3.php
+++ b/system/library/retailcrm/RetailcrmApiClient3.php
@@ -1,6 +1,14 @@
 <?php
 /**
- *  retailCRM API client class
+ * PHP version 5.3
+ *
+ * API client class
+ *
+ * @category RetailCrm
+ * @package  RetailCrm
+ * @author   RetailCrm <integration@retailcrm.ru>
+ * @license  https://opensource.org/licenses/MIT MIT License
+ * @link     http://www.retailcrm.ru/docs/Developers/ApiVersion3
  */
 class RetailcrmApiClient3
 {
@@ -38,7 +46,7 @@ class RetailcrmApiClient3
      *
      * @param  array       $order
      * @param  string      $site (default: null)
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function ordersCreate(array $order, $site = null)
     {
@@ -57,7 +65,7 @@ class RetailcrmApiClient3
      * @param  array       $order
      * @param  string      $by
      * @param  string      $site (default: null)
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function ordersEdit(array $order, $by = 'externalId', $site = null)
     {
@@ -86,7 +94,7 @@ class RetailcrmApiClient3
      *
      * @param  array       $orders
      * @param  string      $site (default: null)
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function ordersUpload(array $orders, $site = null)
     {
@@ -105,7 +113,7 @@ class RetailcrmApiClient3
      * @param  string      $id
      * @param  string      $by (default: 'externalId')
      * @param  string      $site (default: null)
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function ordersGet($id, $by = 'externalId', $site = null)
     {
@@ -124,7 +132,7 @@ class RetailcrmApiClient3
      * @param  int         $limit (default: 100)
      * @param  int         $offset (default: 0)
      * @param  bool        $skipMyChanges (default: true)
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function ordersHistory(
         DateTime $startDate = null,
@@ -160,7 +168,7 @@ class RetailcrmApiClient3
      * @param  array       $filter (default: array())
      * @param  int         $page (default: null)
      * @param  int         $limit (default: null)
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function ordersList(array $filter = array(), $page = null, $limit = null)
     {
@@ -184,7 +192,7 @@ class RetailcrmApiClient3
      *
      * @param  array       $ids (default: array())
      * @param  array       $externalIds (default: array())
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function ordersStatuses(array $ids = array(), array $externalIds = array())
     {
@@ -204,7 +212,7 @@ class RetailcrmApiClient3
      * Save order IDs' (id and externalId) association in the CRM
      *
      * @param  array       $ids
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function ordersFixExternalIds(array $ids)
     {
@@ -223,7 +231,7 @@ class RetailcrmApiClient3
      * @param  array       $filter (default: array())
      * @param  int         $page (default: null)
      * @param  int         $limit (default: null)
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function ordersPacksHistory(array $filter = array(), $page = null, $limit = null)
     {
@@ -247,7 +255,7 @@ class RetailcrmApiClient3
      *
      * @param  array       $customer
      * @param  string      $site (default: null)
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function customersCreate(array $customer, $site = null)
     {
@@ -266,7 +274,7 @@ class RetailcrmApiClient3
      * @param  array       $customer
      * @param  string      $by (default: 'externalId')
      * @param  string      $site (default: null)
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function customersEdit(array $customer, $by = 'externalId', $site = null)
     {
@@ -298,7 +306,7 @@ class RetailcrmApiClient3
      *
      * @param  array       $customers
      * @param  string      $site (default: null)
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function customersUpload(array $customers, $site = null)
     {
@@ -317,7 +325,7 @@ class RetailcrmApiClient3
      * @param  string      $id
      * @param  string      $by (default: 'externalId')
      * @param  string      $site (default: null)
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function customersGet($id, $by = 'externalId', $site = null)
     {
@@ -334,7 +342,7 @@ class RetailcrmApiClient3
      * @param  array       $filter (default: array())
      * @param  int         $page (default: null)
      * @param  int         $limit (default: null)
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function customersList(array $filter = array(), $page = null, $limit = null)
     {
@@ -357,7 +365,7 @@ class RetailcrmApiClient3
      * Save customer IDs' (id and externalId) association in the CRM
      *
      * @param  array       $ids
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function customersFixExternalIds(array $ids)
     {
@@ -377,7 +385,7 @@ class RetailcrmApiClient3
      * @param  int    $page (default: null)
      * @param  int    $limit (default: null)
      * @param  string $site (default: null)
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function storeInventories(array $filter = array(), $page = null, $limit = null, $site = null)
     {
@@ -401,7 +409,7 @@ class RetailcrmApiClient3
      *
      * @param  array       $offers
      * @param  string      $site (default: null)
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function storeInventoriesUpload(array $offers, $site = null)
     {
@@ -419,7 +427,7 @@ class RetailcrmApiClient3
     /**
      * Returns deliveryServices list
      *
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function deliveryServicesList()
     {
@@ -429,7 +437,7 @@ class RetailcrmApiClient3
     /**
      * Returns deliveryTypes list
      *
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function deliveryTypesList()
     {
@@ -439,7 +447,7 @@ class RetailcrmApiClient3
     /**
      * Returns orderMethods list
      *
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function orderMethodsList()
     {
@@ -449,7 +457,7 @@ class RetailcrmApiClient3
     /**
      * Returns orderTypes list
      *
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function orderTypesList()
     {
@@ -459,7 +467,7 @@ class RetailcrmApiClient3
     /**
      * Returns paymentStatuses list
      *
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function paymentStatusesList()
     {
@@ -469,7 +477,7 @@ class RetailcrmApiClient3
     /**
      * Returns paymentTypes list
      *
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function paymentTypesList()
     {
@@ -479,7 +487,7 @@ class RetailcrmApiClient3
     /**
      * Returns productStatuses list
      *
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function productStatusesList()
     {
@@ -489,7 +497,7 @@ class RetailcrmApiClient3
     /**
      * Returns statusGroups list
      *
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function statusGroupsList()
     {
@@ -499,7 +507,7 @@ class RetailcrmApiClient3
     /**
      * Returns statuses list
      *
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function statusesList()
     {
@@ -509,7 +517,7 @@ class RetailcrmApiClient3
     /**
      * Returns sites list
      *
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function sitesList()
     {
@@ -519,7 +527,7 @@ class RetailcrmApiClient3
     /**
      * Returns stores list
      *
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function storesList()
     {
@@ -530,7 +538,7 @@ class RetailcrmApiClient3
      * Edit deliveryService
      *
      * @param array $data delivery service data
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function deliveryServicesEdit(array $data)
     {
@@ -551,7 +559,7 @@ class RetailcrmApiClient3
      * Edit deliveryType
      *
      * @param array $data delivery type data
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function deliveryTypesEdit(array $data)
     {
@@ -572,7 +580,7 @@ class RetailcrmApiClient3
      * Edit orderMethod
      *
      * @param array $data order method data
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function orderMethodsEdit(array $data)
     {
@@ -593,7 +601,7 @@ class RetailcrmApiClient3
      * Edit orderType
      *
      * @param array $data order type data
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function orderTypesEdit(array $data)
     {
@@ -614,7 +622,7 @@ class RetailcrmApiClient3
      * Edit paymentStatus
      *
      * @param array $data payment status data
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function paymentStatusesEdit(array $data)
     {
@@ -635,7 +643,7 @@ class RetailcrmApiClient3
      * Edit paymentType
      *
      * @param array $data payment type data
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function paymentTypesEdit(array $data)
     {
@@ -656,7 +664,7 @@ class RetailcrmApiClient3
      * Edit productStatus
      *
      * @param array $data product status data
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function productStatusesEdit(array $data)
     {
@@ -677,7 +685,7 @@ class RetailcrmApiClient3
      * Edit order status
      *
      * @param array $data status data
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function statusesEdit(array $data)
     {
@@ -698,7 +706,7 @@ class RetailcrmApiClient3
      * Edit site
      *
      * @param array $data site data
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function sitesEdit(array $data)
     {
@@ -719,7 +727,7 @@ class RetailcrmApiClient3
      * Edit store
      *
      * @param array $data site data
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function storesEdit(array $data)
     {
@@ -743,7 +751,7 @@ class RetailcrmApiClient3
     /**
      * Update CRM basic statistic
      *
-     * @return RetailcrmApiResponse
+     * @return ApiResponse
      */
     public function statisticUpdate()
     {
diff --git a/system/library/retailcrm/RetailcrmApiClient4.php b/system/library/retailcrm/RetailcrmApiClient4.php
index eca5eb5..5a406f1 100644
--- a/system/library/retailcrm/RetailcrmApiClient4.php
+++ b/system/library/retailcrm/RetailcrmApiClient4.php
@@ -12,7 +12,6 @@
  */
 class RetailcrmApiClient4
 {
-
     const VERSION = 'v4';
 
     protected $client;
diff --git a/system/library/retailcrm/RetailcrmApiClient5.php b/system/library/retailcrm/RetailcrmApiClient5.php
index 9b2057b..bf80d53 100644
--- a/system/library/retailcrm/RetailcrmApiClient5.php
+++ b/system/library/retailcrm/RetailcrmApiClient5.php
@@ -8,11 +8,10 @@
  * @package  RetailCrm
  * @author   RetailCrm <integration@retailcrm.ru>
  * @license  https://opensource.org/licenses/MIT MIT License
- * @link     http://www.retailcrm.ru/docs/Developers/ApiVersion4
+ * @link     http://www.retailcrm.ru/docs/Developers/ApiVersion5
  */
 class RetailcrmApiClient5
 {
-
     const VERSION = 'v5';
 
     protected $client;
@@ -95,6 +94,14 @@ class RetailcrmApiClient5
         return $this->client->makeRequest("/users/$id", RetailcrmHttpClient::METHOD_GET);
     }
 
+    /**
+     * Change user status
+     *
+     * @param integer $id     user ID
+     * @param string  $status user status
+     *
+     * @return ApiResponse
+     */
     public function usersStatus($id, $status)
     {
         $statuses = array("free", "busy", "dinner", "break");
@@ -112,6 +119,15 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Get segments list
+     *
+     * @param array $filter
+     * @param null  $limit
+     * @param null  $page
+     *
+     * @return ApiResponse
+     */
     public function segmentsList(array $filter = array(), $limit = null, $page = null)
     {
         $parameters = array();
@@ -133,6 +149,15 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Get custom fields list
+     *
+     * @param array $filter
+     * @param null  $limit
+     * @param null  $page
+     *
+     * @return ApiResponse
+     */
     public function customFieldsList(array $filter = array(), $limit = null, $page = null)
     {
         $parameters = array();
@@ -153,7 +178,15 @@ class RetailcrmApiClient5
             $parameters
         );
     }
-
+    
+    /**
+     * Create custom field
+     *
+     * @param $entity
+     * @param $customField
+     *
+     * @return ApiResponse
+     */
     public function customFieldsCreate($entity, $customField)
     {
         if (!count($customField) ||
@@ -178,7 +211,15 @@ class RetailcrmApiClient5
             array('customField' => json_encode($customField))
         );
     }
-
+    
+    /**
+     * Edit custom field
+     *
+     * @param $entity
+     * @param $customField
+     *
+     * @return ApiResponse
+     */
     public function customFieldsEdit($entity, $customField)
     {
         if (!count($customField) || empty($customField['code'])) {
@@ -200,6 +241,14 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Get custom field
+     *
+     * @param $entity
+     * @param $code
+     *
+     * @return ApiResponse
+     */
     public function customFieldsGet($entity, $code)
     {
         if (empty($code)) {
@@ -220,6 +269,15 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Get custom dictionaries list
+     *
+     * @param array $filter
+     * @param null  $limit
+     * @param null  $page
+     *
+     * @return ApiResponse
+     */
     public function customDictionariesList(array $filter = [], $limit = null, $page = null)
     {
         $parameters = [];
@@ -241,6 +299,13 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Create custom dictionary
+     *
+     * @param $customDictionary
+     *
+     * @return ApiResponse
+     */
     public function customDictionariesCreate($customDictionary)
     {
         if (!count($customDictionary) ||
@@ -259,6 +324,13 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Edit custom dictionary
+     *
+     * @param $customDictionary
+     *
+     * @return ApiResponse
+     */
     public function customDictionariesEdit($customDictionary)
     {
         if (!count($customDictionary) ||
@@ -277,6 +349,13 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Get custom dictionary
+     *
+     * @param $code
+     *
+     * @return ApiResponse
+     */
     public function customDictionariesGet($code)
     {
         if (empty($code)) {
@@ -528,6 +607,15 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Combine orders
+     *
+     * @param string $technique
+     * @param array  $order
+     * @param array  $resultOrder
+     *
+     * @return ApiResponse
+     */
     public function ordersCombine($order, $resultOrder, $technique = 'ours')
     {
         $techniques = array('ours', 'summ', 'theirs');
@@ -555,6 +643,17 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Create an order payment
+     *
+     * @param array $payment order data
+     *
+     * @throws \InvalidArgumentException
+     * @throws \RetailCrm\Exception\CurlException
+     * @throws \RetailCrm\Exception\InvalidJsonException
+     *
+     * @return ApiResponse
+     */
     public function ordersPaymentCreate(array $payment)
     {
         if (!count($payment)) {
@@ -570,6 +669,15 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Edit an order payment
+     *
+     * @param array  $payment order data
+     * @param string $by      by key
+     * @param null   $site    site code
+     *
+     * @return ApiResponse
+     */
     public function ordersPaymentEdit(array $payment, $by = 'externalId', $site = null)
     {
         if (!count($payment)) {
@@ -596,6 +704,27 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Edit an order payment
+     *
+     * @param string $id payment id
+     *
+     * @return ApiResponse
+     */
+    public function ordersPaymentDelete($id)
+    {
+        if (!$id) {
+            throw new \InvalidArgumentException(
+                'Parameter `id` must be set'
+            );
+        }
+        
+        return $this->client->makeRequest(
+            sprintf('/orders/payments/%s/delete', $id),
+            RetailcrmHttpClient::METHOD_POST
+        );
+    }
+
     /**
      * Returns filtered customers list
      *
@@ -802,6 +931,14 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Combine customers
+     *
+     * @param array $customers
+     * @param array $resultCustomer
+     *
+     * @return ApiResponse
+     */
     public function customersCombine(array $customers, $resultCustomer)
     {
 
@@ -821,6 +958,88 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Returns filtered customers notes list
+     *
+     * @param array $filter (default: array())
+     * @param int   $page   (default: null)
+     * @param int   $limit  (default: null)
+     *
+     * @throws \InvalidArgumentException
+     * @throws \RetailCrm\Exception\CurlException
+     * @throws \RetailCrm\Exception\InvalidJsonException
+     *
+     * @return ApiResponse
+     */
+    public function customersNotesList(array $filter = array(), $page = null, $limit = null)
+    {
+        $parameters = array();
+        if (count($filter)) {
+            $parameters['filter'] = $filter;
+        }
+        if (null !== $page) {
+            $parameters['page'] = (int) $page;
+        }
+        if (null !== $limit) {
+            $parameters['limit'] = (int) $limit;
+        }
+        return $this->client->makeRequest(
+            '/customers/notes',
+            RetailcrmHttpClient::METHOD_GET,
+            $parameters
+        );
+    }
+
+    /**
+     * Create customer note
+     *
+     * @param array $note (default: array())
+     * @param string $site     (default: null)
+     *
+     * @throws \InvalidArgumentException
+     * @throws \RetailCrm\Exception\CurlException
+     * @throws \RetailCrm\Exception\InvalidJsonException
+     *
+     * @return ApiResponse
+     */
+    public function customersNotesCreate($note, $site = null)
+    {
+        if (empty($note['customer']['id']) && empty($note['customer']['externalId'])) {
+            throw new \InvalidArgumentException(
+                'Customer identifier must be set'
+            );
+        }
+        return $this->client->makeRequest(
+            '/customers/notes/create',
+            RetailcrmHttpClient::METHOD_POST,
+            $this->fillSite($site, array('note' => json_encode($note)))
+        );
+    }
+
+    /**
+     * Delete customer note
+     *
+     * @param integer $id
+     *
+     * @throws \InvalidArgumentException
+     * @throws \RetailCrm\Exception\CurlException
+     * @throws \RetailCrm\Exception\InvalidJsonException
+     *
+     * @return ApiResponse
+     */
+    public function customersNotesDelete($id)
+    {
+        if (empty($id)) {
+            throw new \InvalidArgumentException(
+                'Note id must be set'
+            );
+        }
+        return $this->client->makeRequest(
+            "/customers/notes/$id/delete",
+            RetailcrmHttpClient::METHOD_POST
+        );
+    }
+
     /**
      * Get orders assembly list
      *
@@ -989,6 +1208,15 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Get tasks list
+     *
+     * @param array $filter
+     * @param null  $limit
+     * @param null  $page
+     *
+     * @return ApiResponse
+     */
     public function tasksList(array $filter = array(), $limit = null, $page = null)
     {
         $parameters = array();
@@ -1010,6 +1238,15 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Create task
+     *
+     * @param array $task
+     * @param null  $site
+     *
+     * @return ApiResponse
+     *
+     */
     public function tasksCreate($task, $site = null)
     {
         if (!count($task)) {
@@ -1028,6 +1265,15 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Edit task
+     *
+     * @param array $task
+     * @param null  $site
+     *
+     * @return ApiResponse
+     *
+     */
     public function tasksEdit($task, $site = null)
     {
         if (!count($task)) {
@@ -1046,6 +1292,13 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Get custom dictionary
+     *
+     * @param $id
+     *
+     * @return ApiResponse
+     */
     public function tasksGet($id)
     {
         if (empty($id)) {
@@ -1060,6 +1313,19 @@ class RetailcrmApiClient5
         );
     }
 
+    /**
+     * Get products groups
+     *
+     * @param array $filter (default: array())
+     * @param int   $page   (default: null)
+     * @param int   $limit  (default: null)
+     *
+     * @throws \InvalidArgumentException
+     * @throws \RetailCrm\Exception\CurlException
+     * @throws \RetailCrm\Exception\InvalidJsonException
+     *
+     * @return ApiResponse
+     */
     public function storeProductsGroups(array $filter = array(), $page = null, $limit = null)
     {
         $parameters = array();