AVS Codes
| X | Exact match, 9-character numeric ZIP |
| Y | Exact match, 5-character numeric ZIP |
| A | Address match only |
| W | 9-character numeric ZIP match only |
| Z | 5-character Zip match only |
| N | No address or ZIP match |
| U | Address unavailable |
| G | Non-U.S. Issuer does not participate |
| R | Issuer system unavailable |
| E | Not a mail/phone order |
| S | Service not supported |
| 0 | AVS Not Available |
CVV2/CVC2 Codes
| M | CVV2/CVC2 Match |
| N | CVV2/CVC2 No Match |
| P | Not Processed |
| S | Merchant has indicated that CVV2/CVC2 is not present on card |
| U | Issuer is not certified and/or has not provided Visa encrypting keys |