506
Variant Also Negotiates
Server errors (5xx)·RFC 2295
What 506 means
A content-negotiation configuration error on the server.
The chosen variant is itself configured to negotiate, causing a circular reference.
Server errors (5xx)
The server failed to fulfil an apparently valid request.
Other 5xx codes
FAQ — 506
What does HTTP 506 mean?
506 Variant Also Negotiates: A content-negotiation configuration error on the server. The chosen variant is itself configured to negotiate, causing a circular reference.
Which class does status code 506 belong to?
506 is a Server errors (5xx) code. The server failed to fulfil an apparently valid request.
Where is the 506 code defined?
Status code 506 is defined in RFC 2295 and is part of the IANA HTTP Status Code Registry.