E04028 — AudienceInUse

This audience is targeted by one or more broadcasts and cannot be deleted. Remove it from those broadcasts first.

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.