4XX - Error occurred in the client’s part
5XX - Error occurred in the server’s part
| Error Code | Description |
| 400 | Bad Request |
| 401 | Authentication Failure |
| 403 | Forbidden |
| 404 | Entity does not exist |
| 405 | Method does not exist |
| 409 | Resource conflict. Resource might already exist |
| 412 | Precondition failed |
| 413 | Request Entity too large to be processed |
| 422 | Input not in an expected format |
| 429 | Too many error requests |
| 500 | Internal Server Error |
| 503 | Service Unavailable |
| 520 | Unknown error |
