> For the complete documentation index, see [llms.txt](https://docs.paystation.ng/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.paystation.ng/resources/errors.md).

# Errors and status codes

## HTTP status codes

| Status | Meaning                                                 |
| ------ | ------------------------------------------------------- |
| `200`  | Request completed successfully                          |
| `201`  | Resource created successfully                           |
| `202`  | Request accepted, but provider outcome is uncertain     |
| `401`  | Authentication failed                                   |
| `403`  | Merchant, feature, or credential scope is not permitted |
| `404`  | Resource was not found for the authenticated merchant   |
| `409`  | Idempotency conflict or operation already processing    |
| `422`  | Request validation or provider validation failed        |
| `429`  | Too many requests                                       |
| `500`  | Unexpected server error                                 |

## Authentication error

```json
{
  "status": false,
  "message": "Invalid or expired API credential."
}
```

## Permission error

```json
{
  "status": false,
  "message": "This credential does not have the required permission."
}
```

Do not automatically retry `4xx` responses except `409` caused by processing state or `429`, and only retry those with controlled backoff.


---

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