Created by Claude - please verify

Teams inventory - activity comes from Microsoft's usage report, which lags by up to 48 hours.

Required Microsoft Graph permissions

Group.Read.All Reports.Read.All — application permissions, granted to the app registration with admin consent.

Endpoints: GET /v1.0/groups?$filter=resourceProvisioningOptions/Any(x:x eq 'Team') · GET /v1.0/groups/{id}/owners · GET /v1.0/reports/getTeamsTeamActivityDetail(period='D90')

If 'Display concealed user, group, and site names in all reports' is on in the Microsoft 365 admin center (Settings > Org settings > Reports), the activity columns cannot be matched and stay empty.

If a permission is missing, this report shows a red load error with the Graph status code — not an empty table.

Teams Inventory - Ownerless & Inactive Teams

A team without a working owner cannot be governed: nobody approves members, renews the group or cleans up guests. Teams nobody used for 90 days still hold files, chats and guest access. Both are listed first.

This tenant has no Teams-enabled groups.