E17001 — MailboxAddressTombstoned

This address belonged to a deleted mailbox and cannot be bound yet. Rebinding is possible 30 days after deletion, in the same workspace only.

The request conflicts with the current state of the resource, including idempotency conflicts (E01004, E01005). Fetch the resource's current state and reconcile before retrying. For idempotency conflicts, reuse the original request body with the original key, or mint a new key for a genuinely new request.