Deleting AutoAttendants and CallQueue

You cannot force-delete Auto Attendants or Call Queues in Microsoft Teams if they are still referenced by endpoints or other resources. The error
"Can't remove the Auto Attendant. Auto Attendant is still referenced by Endpoints Ids"
means there are still dependencies.

Azure/Teams Best Practices:

• Ensure all resource accounts, endpoints, and references (including Calling IDs and assigned numbers) are fully removed or unassigned before deletion.
• Wait for Azure AD/Teams backend to sync changes; sometimes it takes several hours for references to clear.
• For Call Queues, ensure all settings (like minimum queue time) meet requirements before deletion.

Recommended Steps:

1. Double-check all resource accounts and endpoints are unassigned from the Auto Attendant/Call Queue.
2. Remove any assigned phone numbers or Calling IDs.
3. Wait for backend sync (up to 24 hours).
4. Try deletion again via Teams Admin Center or PowerShell.