HTTP 203 — Non-Authoritative Information
The server is a transforming proxy that received a 200 OK from its origin, but is returning a modified version of the origin's response
When to use it
Use status 203 when this is the correct HTTP response semantic: The server is a transforming proxy that received a 200 OK from its origin, but is returning a modified version of the origin's response
Request and response example
GET /resource HTTP/1.1
Host: api.example.com
HTTP/1.1 203 Non-Authoritative Information
Content-Type: application/json