diff --git a/webapp/services/callback/OutAppPurchase.php b/webapp/services/callback/OutAppPurchase.php
index c2670bbf..afe9ba2a 100644
--- a/webapp/services/callback/OutAppPurchase.php
+++ b/webapp/services/callback/OutAppPurchase.php
@@ -47,15 +47,15 @@ class OutAppPurchase {
             return;
         }
         $accountId = getReqVal('account_id', '');
+        $orderId = getReqVal('order_id', '');
         $status = getReqVal('status', '');
         $id = getReqVal('id', '');
         $txhash = getReqVal('txhash', '');
         $sign = getReqVal('sign', '');
-        $orderId = getReqVal('order_id', '');
 
         $orderDb = OutAppOrder::find($orderId);
         if (!$orderDb) {
-            myself()->_rspErr(2, 'not found order');
+            myself()->_rspErr(0, 'not found order');
             return;
         }
         if ($orderDb['status'] != OutAppOrder::FINISHED_STATE) {