HTTP 505 — HTTP Version Not Supported
The server does not support the HTTP protocol version used in the request
When to use it
Use status 505 when this is the correct HTTP response semantic: The server does not support the HTTP protocol version used in the request
Request and response example
GET /service HTTP/1.1
Host: api.example.com
HTTP/1.1 505 HTTP Version Not Supported
Content-Type: application/json
{"error":"Service failed to process the request"}