diff --git a/py5paisa/py5paisa.py b/py5paisa/py5paisa.py
index 4a72f8d4..f86168fd 100644
--- a/py5paisa/py5paisa.py
+++ b/py5paisa/py5paisa.py
@@ -622,6 +622,7 @@ def create_payload(self):
             self.jwt_headers=JWT_HEADERS
             self.jwt_payload=JWT_PAYLOAD
             self.SOCKET_DEPTH_PAYLOAD=SOCKET_DEPTH_PAYLOAD
+            self.subscription_key = SUBSCRIPTION_KEY
         except Exception as e:
             log_response(e)