diff --git a/Gateway/Http/Client/Curl.php b/Gateway/Http/Client/Curl.php
index 7d79f5f4..b48e28db 100644
--- a/Gateway/Http/Client/Curl.php
+++ b/Gateway/Http/Client/Curl.php
@@ -57,16 +57,6 @@ class Curl implements ClientInterface
      */
     private $logger;
 
-    /**
-     * @var array
-     */
-    private $allowedFields = [
-        'orderId',
-        'customerInfo',
-        'merchantInfo',
-        'transaction',
-    ];
-
     /**
      * Curl constructor.
      *
@@ -125,7 +115,7 @@ private function place(TransferInterface $transfer)
             /** @var MagentoCurl $adapter */
             $adapter = $this->adapterFactory->create();
             $options = $this->getBasicOptions();
-            $requestBody = $this->preparePostFields($transfer->getBody());
+            $requestBody = $transfer->getBody();
             if ($transfer->getMethod() === Request::METHOD_PUT) {
                 $options = $options +
                     [
@@ -152,24 +142,6 @@ private function place(TransferInterface $transfer)
         }
     }
 
-    /**
-     * Remove all fields that are not marked as known.
-     *
-     * @param array $fields
-     * @return array
-     */
-    private function preparePostFields($fields)
-    {
-        $allowedFields = $this->allowedFields;
-        $fields = array_filter(
-            $fields,
-            function ($key) use ($allowedFields) { return in_array($key, $allowedFields);},
-            ARRAY_FILTER_USE_KEY
-        );
-
-        return $fields;
-    }
-
     /**
      * @param $headers
      *
diff --git a/Gateway/Http/TransferFactory.php b/Gateway/Http/TransferFactory.php
index 7664e4a4..09662011 100644
--- a/Gateway/Http/TransferFactory.php
+++ b/Gateway/Http/TransferFactory.php
@@ -54,6 +54,16 @@ class TransferFactory implements TransferFactoryInterface
      */
     private $urlParams = [];
 
+    /**
+     * @var array
+     */
+    private $allowedFields = [
+        'orderId',
+        'customerInfo',
+        'merchantInfo',
+        'transaction',
+    ];
+
     /**
      * TransferFactory constructor.
      *
@@ -91,9 +101,7 @@ public function create(array $request)
             ClientInterface::HEADER_PARAM_X_REQUEST_ID => $request['requestId'] ?? $this->generateRequestId()
         ]);
 
-        if (isset($request['requestId'])) {
-            unset($request['requestId']);
-        }
+        $request = $this->filterPostFields($request);
 
         $this->transferBuilder
             ->setBody($this->getBody($request))
@@ -103,6 +111,24 @@ public function create(array $request)
         return $this->transferBuilder->build();
     }
 
+    /**
+     * Remove all fields that are not marked as allowed.
+     *
+     * @param array $fields
+     * @return array
+     */
+    private function filterPostFields($fields)
+    {
+        $allowedFields = $this->allowedFields;
+        $fields = array_filter(
+            $fields,
+            function ($key) use ($allowedFields) { return in_array($key, $allowedFields);},
+            ARRAY_FILTER_USE_KEY
+        );
+
+        return $fields;
+    }
+
     /**
      * Generating Url.
      *