Credit Card Status Codes
In all cases where the response code requires the card holder to contact the issuing bank, to assist in the enquiry you will need the date and amount of the attempted transaction which failed and also why the bank returned that status for the failed transaction. Alternatively the issuing bank employee may check the available funds on the card. If you receive a numeric status code other than those listed in this section, you should check that the card details are correct. If they are, ask the card holder for an alternative credit card. If this still does not resolve the problem, the card holder should contact their issuing bank. If you receive a status code starting with Q that you do not understand, you should contact us with the transaction details.
Note: There are no response codes specific to card verification number mismatches. This is because no financial institutions in Australia currently return any such information if declining a transaction.