diff --git a/Model/Api/CreateOrder.php b/Model/Api/CreateOrder.php
index 1001e0dbd..097486c92 100644
--- a/Model/Api/CreateOrder.php
+++ b/Model/Api/CreateOrder.php
@@ -287,7 +287,7 @@ public function execute(
             $this->sendResponse(422, [
                 'status' => 'failure',
                 'error' => [[
-                    'code' => 6009,
+                    'code' => ($e->getMessage() && $this->isCustomOutOfStockMsg($e->getMessage())) ? self::E_BOLT_ITEM_OUT_OF_INVENTORY : 6009,
                     'data' => [[
                         'reason' => 'Unprocessable Entity: ' . $e->getMessage(),
                     ]]
@@ -839,4 +839,13 @@ protected function getTotalAmountFromTransaction($transaction)
     {
         return $transaction->order->cart->total_amount->amount;
     }
+
+    /**
+     * @param $msg
+     * @return bool
+     */
+    protected function isCustomOutOfStockMsg($msg)
+    {
+        return strpos(strtolower($msg), 'out of stock') !== false;
+    }
 }