4×× - Client Error
406 Not Acceptable
The target resource does not have a current representation that would be acceptable to the user agent, according to the proactive negotiation header fields received in the request1, and the server is unwilling to supply a default representation.
The server SHOULD generate a payload containing a list of available representation characteristics and corresponding resource identifiers from which the user or user agent can choose the one most appropriate. A user agent MAY automatically select the most appropriate choice from that list. However, this specification does not define any standard for such automatic selection, as described in RFC7231 Section 6.4.1.
- 1 Content Negotiation RFC7231 Section 5.3
- Source: RFC7231 Section 6.5.6
406 Code References
- Rails HTTP Status Symbol:
:not_acceptable - Go HTTP Status Constant:
http.StatusNotAcceptable - Symfony HTTP Status Constant:
Response::HTTP_NOT_ACCEPTABLE - Python2 HTTP Status Constant:
httplib.NOT_ACCEPTABLE - Python3+ HTTP Status Constant:
http.client.NOT_ACCEPTABLE - Python3.5+ HTTP Status Constant:
http.HTTPStatus.NOT_ACCEPTABLE