credit_note_issue_unconfirmed
The same route when Stripe did not answer the credit-note creation - a transient or timeout class, not a definite refusal. Money may or may not have been credited and the local mirror has no row. Deliberately not retried in-band, on the same posture as receptionist_connections_charge_unconfirmed above.
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/credit_note_issue_unconfirmed",
"title": "…",
"status": 502,
"detail": "…",
"instance": "/v1/…"
}