First Data Account Updater Response Codes:

Transaction Responses

Code	Message	UniPay Code
CONTAC	No Update	CC
NOMTCH	Not Matches	NN
UPDATE	OK	UA
EXPIRY	OK	UE
NOUPDT	No Update	UN
**19NS	Merchant not registered	XX
**04NS	Invalid account number length	XX
XX	Default or no response received.	XX
**11NS	Non-numeric account number	XX
**05NS	Bad card type code	XX
**12NS	Invalid Expiration Date	XX
**06NS	Bad check digit value	XX

Transaction Responses

Code	Message	UniPay Code
CONTAC	No Update	CC
NOMTCH	Not Matches	NN
UPDATE	OK	UA
EXPIRY	OK	UE
NOUPDT	No Update	UN
**19NS	Merchant not registered	XX
**04NS	Invalid account number length	XX
XX	Default or no response received.	XX
**11NS	Non-numeric account number	XX
**05NS	Bad card type code	XX
**12NS	Invalid Expiration Date	XX
**06NS	Bad check digit value	XX