| Code | Message | EON Payments Code | 
|---|---|---|
| 504 | Contact the cardholder for updated information | CC | 
| 505 | No match found | NN | 
| 501 | The account was closed | NN | 
| 500 | The account number was changed | UA | 
| 502 | The expiration date was changed | UE | 
| 506 | No changes found | UN | 
| 191 | The merchant is not registered in the update program. | XX | 
| XX | Default or no response received. | XX | 
| 301 | Invalid Account Number | XX | 
| 503 | The issuing bank does not participate in the update program | XX | 
| 320 | Invalid Expiration Date | XX | 
| Code | Message | EON Payments Code | 
|---|---|---|
| 504 | Contact the cardholder for updated information | CC | 
| 505 | No match found | NN | 
| 501 | The account was closed | NN | 
| 500 | The account number was changed | UA | 
| 502 | The expiration date was changed | UE | 
| 506 | No changes found | UN | 
| 191 | The merchant is not registered in the update program. | XX | 
| XX | Default or no response received. | XX | 
| 301 | Invalid Account Number | XX | 
| 503 | The issuing bank does not participate in the update program | XX | 
| 320 | Invalid Expiration Date | XX |