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

# Error Codes

The most common API error code responses are described below.

Please note that error codes described bellow are general errors, for specific method errors see error responses for each method.

| HTTP Status                 | Reason              | Description                      |
| --------------------------- | ------------------- | -------------------------------- |
| 401 (Unauthorized)          | BadCredentials      | API credentials are not correct  |
| 404 (Not Found)             | PageNotFound        | Page, action or record not found |
| 404 (Not Found)             | RecordNotFound      | Record not found                 |
| 422 (Unprocessable Entity)  | UnsupportedInput    | API credentials are not valid    |
| 500 (Internal Server Error) | InternalServerError | Server error                     |

Response example:

JSON

```
{
    "status": "error",
    "status_code ": 404,
    "message": {
        "customer_id": "Invalid customer_id"
    }
}
```