contact_phone_reconsent_required
PATCH /v1/contacts/{id} refused a changed phone_e164. Consent proof is bound to one telephone identity and cannot move to another number; create a new contact with fresh evidence, then retire the old contact.
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/contact_phone_reconsent_required",
"title": "…",
"status": 409,
"detail": "…",
"instance": "/v1/…"
}