HTTP status codes starting with the number 4 indicate an issue on the client side.
| Code | Description |
|---|---|
400 | The server cannot process the request due to invalid input. A detailed error message will provide more context. Requests missing required parameters or containing invalid values are classified as invalid and will result in this error. |
401 | Authentication failed due to an invalid Access ID or user token. A corresponding error message will provide more details. Often, an additional internal error code is included for further clarification. |
403 | The server understands the request, but it is denied or access is prohibited. A detailed error message will explain the reason, which is often related to an invalid API key, incorrect request signature, or lack of proper permissions. |
404 | The requested session or transaction could not be found. |