Groups in Microsoft
Table of Contents
SolutionIf you delete a Group any “Team” / Teams Application associated with that Group are orphaned - they cannot be managed in the Miocrosoft Teams Phone Connector. You will need to delete everything associated with the application and re-start.
Changing Group settings in the Microsoft Admin portal can break a “Team” and any associated Teams Applications, including the one built for this integration.
When you create a Teams Application with the Microsoft Teams Phone Connector, you load it as part of a unique “Team” in Microsoft Teams. A “Team” is built on top of a Group, which is managed at the Microsoft Admin level.
Navigate to Microsoft 365 Admin Center > Groups > Groups.

Solution
You will need to go into the Microsoft Azure Admin and delete the Enterprise Application. Then, make sure the deleted files (which are normally cached for 30 days) are fully removed. This is a Microsoft Admin task.