The following table lists the HTTP response status codes for the GET (retrieve), POST (create), PUT (modify), and DELETE operations.
| Response Code | HTTP Operation | Response Body Contents | Description |
|---|---|---|---|
| 200 | GET, PUT, DELETE | Resource | No error, operation successful. |
| 201 Created | POST | Resource that was created | Successful creation of a resource. The Location HTTP Header can provide a link to the newly created resource. |
| 204 No Content | POST, PUT, DELETE | N/A | The request was processed successfully, but no response body is needed. |
| 304 Not Modified | conditional GET | N/A | Resource has not been modified. Used when HTTP caching headers are in play. |
| 400 Bad Request | GET, POST, PUT, DELETE | Error Message | Malformed syntax or a bad query. |
| 401 Unauthorized | GET, POST, PUT, DELETE | Error Message | Action requires user authentication. |
| 403 Forbidden | GET, POST, PUT, DELETE | Error Message |
When authentication succeeded but authenticated user doesn't have access to the resource. |
| 404 Not Found | GET, POST, PUT, DELETE | Error Message | Resource not found. |
| 405 Not Allowed | GET, POST, PUT, DELETE | Error Message | Method not allowed on resource. |
| 406 Not Acceptable | GET | Error Message | Requested representation not available for the resource. |
| 408 Request Timeout | GET, POST | Error Message | Request has timed out. |
| 409 Resource Conflict | PUT, PUT, DELETE | Error Message | State of the resource doesn't permit request. |
| 410 Gone | GET, PUT | Error Message |
Indicates that the resource at this end point is no longer available. Useful as a blanket response for old API versions |
| 411 Length Required | POST, PUT | Error Message | The server needs to know the size of the entity body and it should be specified in the Content Length header. |
| 412 Precondition failed | GET | Error Message | Operation not completed because preconditions were not met. |
| 415 Unsupported Type | POST, PUT | Error Message | Representation not supported for the resource. |
| 422 Unprocessable Entity | POST, PUT | Error Message |
Used for validation errors |
| 500 Server Error | GET, POST, PUT | Error Message | Internal server error. |
| 501 Not Implemented | POST, PUT, DELETE | Error Message | Requested HTTP operation not supported. |