test_call_destination_not_verified
The test call's to is not a currently verified VerifiedNumber of this tenant - pending is a registration, not proof, and expired/revoked no longer count. Register the number (POST /v1/verified-numbers → POST /v1/verified-numbers/{id}/check) first; a test call may only dial a number the tenant has proven it controls (CANON 120).
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/test_call_destination_not_verified",
"title": "…",
"status": 409,
"detail": "…",
"instance": "/v1/…"
}