diff --git a/src/SprykerEco/Zed/Payone/Business/Payment/PaymentManager.php b/src/SprykerEco/Zed/Payone/Business/Payment/PaymentManager.php
index efd33cafde..c79ec73826 100644
--- a/src/SprykerEco/Zed/Payone/Business/Payment/PaymentManager.php
+++ b/src/SprykerEco/Zed/Payone/Business/Payment/PaymentManager.php
@@ -1026,7 +1026,7 @@ protected function prepareOrderItems(OrderTransfer $orderTransfer, AbstractReque
         $arrayDe = [];
         $arrayVa = [];
 
-        $key = count($arrayId);
+        $key = 1;
 
         foreach ($orderTransfer->getItems() as $itemTransfer) {
             $arrayIt[$key] = PayoneApiConstants::INVOICING_ITEM_TYPE_GOODS;