Index: tst_unhandled_message_log/test.py
===================================================================
diff -u -re42cd503b84403da167a606ef0d3b8ae48093e0f -r106f98149c4637a7327c93bdcaa75f057ff4d40a
--- tst_unhandled_message_log/test.py	(.../test.py)	(revision e42cd503b84403da167a606ef0d3b8ae48093e0f)
+++ tst_unhandled_message_log/test.py	(.../test.py)	(revision 106f98149c4637a7327c93bdcaa75f057ff4d40a)
@@ -44,8 +44,9 @@
     'MESSAGE_7' : "\n[0xAF00]\nHD_custom_data_verification_7\nU08=unsigned_int_argument\nU08=integer\n"
     }
 ERROR_MESSAGE = {
-    "0x1300" : "Incorrect data length (9 of 32) for received Message with ID '0x1300'",
-    "0x0900" : "Incorrect data length (9 of 20) for received Message with ID '0x0900'"
+    "0x1300"              : "Incorrect data length (9 of 32) for received Message with ID '0x1300'",
+    "0x0900"              : "Incorrect data length (9 of 20) for received Message with ID '0x0900'",
+    "DATA_LENGTH_MISMATCH": "Not enough data from position 4 to the length of 4 to get data of type 'N5Types3S32E' in buffer 19.00.00.00.37 for value param"
     }
 
 
@@ -184,7 +185,7 @@
     append_unhandled_configuration_file()
     
     utils.tstStart(__file__)
-    startApplication(config.AUT_NAME) 
+    startApplication(config.AUT_NAME+ " -d") 
     
     #checking if the message is not in the unhandled (err)
     test.startSection("verify the message is not in unhandled (err)")
@@ -294,6 +295,11 @@
     test.endSection()
     
     remove_unhandled_configuration_file()
+       
+    payload = integer_to_bytearray(DUMMY_INT_VALUE_1)
+    hd_simulator.cmd_send_hd_general_response(message_id = 204, accepted = 1, reason = 0, is_pure_data = True, has_parameters = True, parameters_payload = payload)
+    error_message = get_error_message_from_log()
+    test.compare(error_message, ERROR_MESSAGE["DATA_LENGTH_MISMATCH"], "error code should be verified in log file")
 
     utils.tstDone()