HTTP 5xx Server Error Status Codes/HTTP 501 Not Implemented

Method or capability not implemented

Section: Codes 500-510

HTTP 501 Not Implemented

text
text
curl -i -X PATCH https://example.com/legacy-endpoint
Explanation

Used when the server does not support the functionality required to fulfill the request.

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Related commands

Same sheet · prioritizing Codes 500-510
HTTP 500 Internal Server Error
Generic unexpected server failure
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HTTP 502 Bad Gateway
Upstream sent invalid response
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HTTP 503 Service Unavailable
Temporarily unavailable or overloaded
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HTTP 504 Gateway Timeout
Upstream did not respond in time
OpenIn sheettextsame section
HTTP 505 HTTP Version Not Supported
HTTP version unsupported
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HTTP 506 Variant Also Negotiates
Negotiation config loop
OpenIn sheettextsame section