> For the complete documentation index, see [llms.txt](https://developers.gurupay.eu/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.gurupay.eu/getting-started/guides/error-codes.md).

# Error codes

This page provides a comprehensive list of all possible error codes returned by the API, along with detailed explanations and recommended steps to resolve each issue.

| HTTP Code | Message                 | Description                                              | Action to Take                                                           |
| --------- | ----------------------- | -------------------------------------------------------- | ------------------------------------------------------------------------ |
| 400       | INTERNAL\_SERVER\_ERROR | Unexpected server-side or integration error.             | Contact client care team for further assistance.                         |
| 401       | UNAUTHORIZED            | Invalid or missing API token.                            | Contact your account manager or client care team for further assistance. |
| 403       | NO\_PERMISSION          | Authenticated but not authorized to access the resource. | Contact your account manager or client care team for further assistance. |
| 404       | NOT\_FOUND              | Resource or endpoint not found.                          | Check request URL to confirm the endoint you are using is correct.       |
| 422       | VALIDATION\_ERROR       | Request failed input validation.                         | Validate whether you have entered information correctly.                 |
| 429       | Too Many Attempts.      | Rate limit exceeded.                                     | Respect rate limits and try to complete transactions in few minutes.     |
| 500       | INTERNAL\_SERVER\_ERROR | Unhandled internal error.                                | Contact client care team for further assistance.                         |


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