---
sourceDocument: Xanadu API Reference
sourceDocumentLink: https://www.servicenow.com/docs/r/xanadu/api-reference

 Release :

    - xanadu

ft:locale :

    - en-US

ft:publication_title :

    - Xanadu API Reference

ft:clusterId :

    - crapiref

bundleId :

    - crapiref

workflow :

    - Creator


---

# REST API HTTP response codes

# REST API HTTP response codes {#ariaid-title1}

* Release version: Xanadu
* 
* Updated August 1, 2024
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read

REST messages sent to an instance return a specific HTTP response code.
{#r_RESTAPIHTTPResponseCodes__table_RestResponseCodes__entry__3}

| Status Code | Message | Details |
|-|-|-|
| 200 | Success | Success with response body. |
| 201 | Created | Success with response body. |
| 204 | Success | Success with no response body. |
| 400 | Bad Request | The request URI does not match the APIs in the system, or the operation failed for unknown reasons. Invalid headers can also cause this error. |
| 401 | Unauthorized | The user is not authorized to use the API. |
| 403 | Forbidden | The requested operation is not permitted for the user. This error can also be caused by ACL failures, or business rule or data policy constraints. |
| 404 | Not found | The requested resource was not found. This can be caused by an ACL constraint or if the resource does not exist. |
| 405 | Method not allowed | The HTTP action is not allowed for the requested REST API, or it is not supported by any API. |
| 406 | Not acceptable | The endpoint does not support the response format specified in the request Accept header. |
| 415 | Unsupported media type | The endpoint does not support the format of the request body. |
| 500 | Internal server error | An unexpected error occurred while processing the request. The response contains additional information about the error. |
| 502 | Bad gateway | The server, while acting as a gateway or proxy, received an invalid response from the upstream server. |
| 503 | Service unavailable | The server is currently unable to handle the request. |
[ ]

{#r_RESTAPIHTTPResponseCodes__table_RestResponseCodes}