receptionist_payment_method_required
The verified uncovered connection amount is positive and the customer has no default payment method. Add one in Billing before confirming; no purchase is claimed or collected.
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_payment_method_required",
"title": "…",
"status": 402,
"detail": "…",
"instance": "/v1/…"
}