answering_policy_rep_not_ready
PUT /v1/phone-numbers/{number_id}/answering-policy names a rep in a ring_humans step that is not an active, transfer-enabled rep of this tenant. Every named rep must resolve, not merely one of them: the step renders as an ordered <Dial> over the reps in the order the document gives, so a single unresolvable rep is a caller ringing dead air partway down the list. Enable the rep for transfers (PATCH /v1/human-reps/{id}) or drop it from the step, then write the document again.
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/answering_policy_rep_not_ready",
"title": "…",
"status": 409,
"detail": "…",
"instance": "/v1/…"
}