---
set: 4
code: 405
title: Method Not Allowed
references:
    "Rails HTTP Status Symbol": ":method_not_allowed"
    "Go HTTP Status Constant": "http.StatusMethodNotAllowed"
---

The method received in the request-line is known by the origin server but not
supported by the target resource.

The origin server MUST generate an Allow header field in a 405 response
containing a list of the target resource's currently supported methods.

A 405 response is cacheable by default; i.e., unless otherwise indicated by the
method definition or explicit cache controls<sup>[1](#ref-1)</sup>.

---

* <span id="ref-1"><sup>1</sup> Calculating Heuristic Freshness
[RFC7234 Section 4.2.2][2]</span>
* Source: [RFC7231 Section 6.5.5][1]

[1]: <http://tools.ietf.org/html/rfc7231#section-6.5.5>
[2]: <http://tools.ietf.org/html/rfc7234#section-4.2.2>