PAYMENT PROCESSING
Response Codes
Card Validation Response Codes
View a complete list of card security code responses. Response codes are applicable for Visa CVV2, Mastercard CVC2, Discover CVV2, and American Express CID.
Code | Description |
---|---|
I, Empty | Data provided is invalid or null. |
M, Y, 0 | Data provided matches the issuer's file. |
N, 1 | Data provided does not match the issuer's file. |
P | Data was not processed because it wasn’t accompanied by the expiration date |
S, 3 | The issuer’s file indicates the card has available data, but the merchant is unable to provide it |
U, X, 4 | The issuer is not certified or the service is not available. |
X, Z | The issuer gave no response. |
2 | The merchant has not implemented data handling. |
Don’t See the Information You are Looking For?
This resource contains the card brands’ official response codes. However, codes can sometimes differ because of the processor, gateway, or software you use. If you receive codes that are different than what’s shown here and you’re struggling to understand their meaning, contact our team. We’ll help you understand your card validation data and the impact on your business.
AVS Codes by Card Brand
View a complete list of the card brands’ official response codes for address verification service (AVS). Discover what the responses mean and the impact they have.

Code | Summary | Description |
---|---|---|
A | Partial Match | Address matches, ZIP does not |
B | Partial Match | Address matches, ZIP not verified |
C | Not Verified | Address and ZIP not verified |
D | Full Match | Address and ZIP match |
F | Full Match | Address and ZIP match (UK only) |
G | Not Verified | Address not verified for international transaction |
I | Not Verified | Address not verified |
M | Full Match | Address and ZIP match |
N | No Match | Neither ZIP nor address match |
P | Partial Match | ZIP matches, address not verified |
R | Not Verified | System unavailable, retry |
U | Not Verified | Information not available |
Y | Full Match | Address and 5-digit or 9-digit ZIP match |
Z | Partial Match | ZIP matches, address does not |

Code | Summary | Description |
---|---|---|
A | Partial Match | Address matches, ZIP does not |
N | No Match | Neither ZIP nor address match |
R | Not Verified | System unavailable, retry |
S | Not Verified | AVS not supported |
U | Not Verified | Information not available |
W | Partial Match | 9-digit ZIP matches, address does not |
X | Full Match | Address and 9-digit ZIP match |
Y | Full Match | Address and 5-digit ZIP match |
Z | Partial Match | ZIP matches, address does not |

Code | Summary | Description |
---|---|---|
A | Full Match | Address and 5-digit or 9-digit ZIP match |
N | No Match | Neither ZIP nor address match |
S | Not Verified | AVS not supported |
T | Partial Match | 9-digit ZIP matches, address does not |
U | Not Verified | System unavailable, retry |
W | Not Verified | Information not available |
X | Full Match | 9-digit ZIP and address match |
Y | Partial Match | Address matches |
Z | Partial Match | ZIP matches, address does not |

Code | Summary | Description |
---|---|---|
A | Partial Match | Address matches, ZIP does not |
D | Partial Match | ZIP matches, name does not |
E | Partial Match | Address and ZIP match, name does not |
F | Partial Match | Address matches, name does not |
K | Partial Match | Name matches |
L | Partial Match | Name and ZIP match |
M | Full Match | Name, address, and ZIP match |
N | No Match | Neither ZIP nor address match |
O | Partial Match | Name and address match |
R | Not Verified | System unavailable, retry |
S | Not Verified | AVS not supported |
U | Not Verified | Information not available |
W | No Match | Name, ZIP, and address do not match |
Y | Partial Match | Address and ZIP match |
Z | Partial Match | ZIP code matches |
Don’t See the Information You are Looking For?
This resource contains the card brands’ official AVS codes. However, many processors and gateways have created their own set of response codes. If you receive codes that are different than what’s shown here and you’re struggling to understand their meaning, contact our team. We’ll help you understand your response codes and their impact on your business.