HTTP status codes / 3xx — Redirection
Several representations exist; pick one.
The resource has multiple representations (e.g. different formats) and the server cannot or will not choose. The body or Location header lists options. Rare in practice — content negotiation usually happens silently.
Check the response body for the list of alternatives.
The fastest way to pin down a 300 is to reproduce the exact request and inspect what actually went over the wire — status, headers, timing and body, without your app code in the way. That is what an API client is for; ReqPad does it from your phone, with every request saved to history.
301 Moved Permanently · 302 Found · 303 See Other · 304 Not Modified · 307 Temporary Redirect · 308 Permanent Redirect — or the full reference.
Build the request, send it, read status + headers + timing — on your iPhone. Free to start.