diff --git a/gentong.js b/gentong.js
index 35838e1..ba3faa3 100644
--- a/gentong.js
+++ b/gentong.js
@@ -373,6 +373,9 @@ function responseCodeFromMessage(message) {
     else if (message.search(/system sedang maintenance/i) >= 0) {
         return '91';
     }
+    else if (message.search(/transaksi gagal di proses, ulangi beberapa saat lagi/i) >= 0) {
+        return '40';
+    }
 
     return;
 }