diff --git a/utils_v2/payments/safaricom/controllers/m_pesa_express.py b/utils_v2/payments/safaricom/controllers/m_pesa_express.py
index 8ab1fa8..13e3a4c 100644
--- a/utils_v2/payments/safaricom/controllers/m_pesa_express.py
+++ b/utils_v2/payments/safaricom/controllers/m_pesa_express.py
@@ -41,6 +41,7 @@ import io
 
 # My utils:
 from utils_v2.string import json
+from utils_v2.string import regex
 from utils_v2.date_time import date_time
 
 # Data models:
@@ -346,16 +347,18 @@ class SafaricomMPesaExpress:
         )
 
         # If the call failed:
-        if api_response.httpCode == 400:
+        if api_response.httpCode not in [200]:
             api_json = await api_response.get_json()
             api_response.message = f"{api_json['errorCode']} -> {api_json['errorMessage']}"
 
         # If the call failed:
-        if api_response.httpCode in [200]:
+        else:
             api_json = await api_response.get_json()
+            success = True if str(api_json.get("ResponseCode")) == "0" else False
             api_response.message = api_json.get("ResponseDescription", "N/A")
             api_response.data = api_json
-            api_response.success = True if str(api_json.get("ResponseCode")) == "0" else False
+            api_response.success = success
+            api_response.referenceId = str(api_json["CheckoutRequestID"])
 
         # Done here:
         return api_response