receptionist_handover_withdrawn
HTTP 409§9.17 The customer team workspace on the phone (`/v1/mobile/workspace/*`, `/v1/mobile/voice/token`)
Internal (runtime redemption): the team call a re-entry session was minted for no longer hands the caller to the AI (the handler took them back, or the customer hung up). No AI session starts.
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_handover_withdrawn",
"title": "…",
"status": 409,
"detail": "…",
"instance": "/v1/…"
}