managed_number_rental_funding_required
Settled eligible prepaid credit is insufficient for the explicitly accepted initial rental; required_minor and currency identify the required amount. No number purchase was submitted.
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/managed_number_rental_funding_required",
"title": "…",
"status": 409,
"detail": "…",
"instance": "/v1/…"
}