diff --git a/partner-simplepay.js b/partner-simplepay.js
index 8f7b33d..3818a8a 100644
--- a/partner-simplepay.js
+++ b/partner-simplepay.js
@@ -427,6 +427,13 @@ function createReverseHttpServer() {
             rc = '40';
         }
 
+        if (rc === '40') {
+            const partnerRC = getPartnerRCFromDiagMessage(diag);
+            if (partnerRC == '15') {
+                rc = '14';
+            }
+        }
+
         if ((typeof qs.balance === 'string') && qs.balance && aaa.updateBalance) {
             const balance = qs.balance.replace(/\D/g, '');
             if (balance) {