Card Validation Response Codes

Table A-5 contains a normalized list of response codes that can be returned when requesting a card validation check.

• CVV2

• CVC2

• CID

The description is not included in the response.

For American Express transactions, if the submitted security code does not match, the transaction is declined with a Response Reason Code of 352 - Decline CVV2/CID Fail.

TABLE Card Validation Response Codes

CVV2/CVC2/CID Response Code	Description
M	Match
N	No Match
P	Not Processed
S	CVV2/CVC2/CID should be on the card, but the merchant has indicated CVV2/CVC2/CID is not present
U	Issuer is not certified for CVV2/CVC2/CID processing
“” (empty response)	Check was not done for an unspecified reason