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405
Client Error

405 Method Not Allowed

The HTTP method used is not allowed for this resource.

Definition (RFC 9110)

HTTP status code 405 405 Method Not Allowed is defined in RFC 9110 (HTTP Semantics), Section 15.5.6 — the current authoritative specification for HTTP semantics, published June 2022, which obsoletes the older RFC 7231 and RFC 2616.

Description

The 405 Method Not Allowed status code indicates that the method received in the request is not supported for the target resource. The response must include an Allow header listing the valid methods.

Common Causes

  • Using POST on a GET-only endpoint
  • Trying DELETE on a resource that doesn't support it
  • Incorrect API method in client code

How to Fix

  • Check API documentation for allowed methods
  • Use the method specified in the Allow header
  • Verify endpoint URL is correct

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Related Status Codes

400
400 Bad Request
The server cannot process the request due to malformed syntax.
 401
401 Unauthorized
Authentication is required and has failed or not been provided.
 402
402 Payment Required
402 Payment Required — code reserved for future use, but currently used by some APIs to signal "payment needed".
 403
403 Forbidden
The server understood the request but refuses to authorize it.
 404
404 Not Found
404 Not Found — the requested URL does not exist on the server. The most common client-error; signals search engines to remove the page from index.
 406
406 Not Acceptable
The server cannot produce a response matching the client's Accept headers.

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