// REFERENCE
405 Method Not Allowed
Class: 4xx
The URL exists but doesn't accept that HTTP method (e.g. a POST where only GET is allowed). The response should include an Allow header with valid methods.
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400
400 Bad Request 401
401 Unauthorized (not authenticated) 403
403 Forbidden (access denied) 404
404 Not Found 406
406 Not Acceptable 408
408 Request Timeout
400 Bad Request 401
401 Unauthorized (not authenticated) 403
403 Forbidden (access denied) 404
404 Not Found 406
406 Not Acceptable 408
408 Request Timeout
Semantics per RFC 9110 and the IANA status code registry. Educational content.