406 Not Acceptable
The server cannot produce a format listed in your Accept header.
What it means
Content negotiation failed.
What your client should do
Relax the Accept header, for example to application/json or */*.
Should you retry?
Only after you change the request.
Try it
The free practice API returns this status on demand, with the headers a well-behaved API would send. Call GET /api/play/status/406 from Endpoint Client and open the Explain tab.
Related codes
Defined in RFC 9110. All status codes and headers