subscription_cancellation_review_required
Hosted cancellation requires an identified Stripe subscription and effective mtm terms. Missing, custom or committed terms direct the customer to support for order/end-date review. This does not assert that an expired commitment renews; a recorded current conversion restores self-service access.
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/subscription_cancellation_review_required",
"title": "…",
"status": 409,
"detail": "…",
"instance": "/v1/…"
}