added error code

Author: Nidhi091999

pro_tes/exceptions.py

@@ -108,8 +108,10 @@ class IPDistanceCalculationError(ValueError):
     },
     IPDistanceCalculationError: {
         "message": "IP distance calculation failed.",
+        "code": "500",
     },
         TesUriError: {
         "message": "TES URI cannot be parsed",
+        "code": "400",
         },
 }