receptionist_location_unavailable
Carrier ingress found that a policy-sealed location selector no longer compiles against the exact intelligence version the selected agent pins. The policy engine records the refusal and advances to its next safe step rather than returning a Media Streams URL that would fail during bootstrap.
Problem shape
Every non-2xx response is an RFC 9457 application/problem+json body. The type URI below is stable and machine-matchable, so branch on the final path segment (the code) and treat the status as redundant confirmation. See the error-handling guide.
{
"type": "https://docs.vocapable.com/errors/receptionist_location_unavailable",
"title": "…",
"status": 409,
"detail": "…",
"instance": "/v1/…"
}