HTTP 415 — Unsupported Media Type
The request entity has a media type which the server or resource does not support
When to use it
Use status 415 when this is the correct HTTP response semantic: The request entity has a media type which the server or resource does not support
Request and response example
GET /protected-resource HTTP/1.1
Host: api.example.com
HTTP/1.1 415 Unsupported Media Type
Content-Type: application/json
{"error":"Request cannot be completed"}