account_deletion_confirmation_invalid
HTTP 400§9.12 Account deletion
The one-time email confirmation token is unknown, already spent, or expired (or its account is no longer active). 400 because there is no credential to re-present: request a new confirmation email.
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/account_deletion_confirmation_invalid",
"title": "…",
"status": 400,
"detail": "…",
"instance": "/v1/…"
}