> For the complete documentation index, see [llms.txt](https://docs.payments.thalescloud.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.payments.thalescloud.io/transit-classic/api-reference/api-overview/error-management.md).

# Error management

The table below lists the different error codes that are used in the TES API.

| Status code | Description                                                                                                              | Retryable |
| ----------- | ------------------------------------------------------------------------------------------------------------------------ | --------- |
| 111         | Missing mandatory parameter                                                                                              | N         |
| 112         | Bad parameter format                                                                                                     | N         |
| 113         | Unknown issuer                                                                                                           | N         |
| 116         | Unknown card account                                                                                                     | N         |
| 117         | Unknown device                                                                                                           | N         |
| 118         | Unknown session                                                                                                          | N         |
| 119         | Unknown virtual card                                                                                                     | N         |
| 120         | Unknown purchase                                                                                                         | N         |
| 121         | Unknown request                                                                                                          | N         |
| 159         | Card is blacklisted                                                                                                      | N         |
| 160         | Card is deleted                                                                                                          | N         |
| 162         | Card has unsufficient balance                                                                                            | N         |
| 163         | Card product not eligible                                                                                                | N         |
| 164         | Provisioning count exceeded                                                                                              | N         |
| 166         | Invalid card information                                                                                                 | N         |
| 167         | Card is already provisioned                                                                                              | N         |
| 170         | Provisioning request declined                                                                                            | N         |
| 171         | <p>Wallet account mismatch.<br>The wallet account is already associated<br>with a card under different customer name</p> | N         |
| 172         | Invalid card, unsupported system code                                                                                    | N         |
| 173         | Invalid card, unsupported service                                                                                        | N         |
| 177         | Invalid card, invalid area data                                                                                          | N         |
| 178         | Invalid card, card status is in-station                                                                                  | N         |
| 191         | Card is expired                                                                                                          | N         |
| 192         | Reader mode attempt exceeded allowed threshold                                                                           | N         |
| 221         | Device or wallet server not accessible                                                                                   | Y         |
| 231         | Device unexpected error                                                                                                  | N         |
| 232         | Device out of memory error                                                                                               | N         |
| 321         | Operation already on-going for this device                                                                               | Y         |
| 322         | Time to live of the operation expired                                                                                    | Y         |
| 323         | Operation incomplete                                                                                                     | N         |
| 419         | PIN required                                                                                                             | N         |
| 420         | PIN incorrect                                                                                                            | N         |
| 421         | PIN locked                                                                                                               | N         |
| 432         | Operation is not allowed with current card state                                                                         | N         |
| 911         | Operation failed                                                                                                         | N         |
| 921         | Unexpected server error                                                                                                  | Y         |

In addition to that, all requests resulting in HTTP 5xx code are considered as retryable.


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