E17008 — DomainHasMailboxes

This domain still has agent mailboxes bound to it. Delete its mailboxes first, then delete the domain.

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.