User.Read.All
— application permission, granted to the app registration with admin consent.
Endpoint:
GET /v1.0/users?$select=licenseAssignmentStates
If a permission is missing, this report shows a red load error with the Graph status code — not an empty table.
Per-user Licence Assignment Errors
Users whose licence could not be applied - not enough seats, two conflicting plans, a missing base licence, or a product not sold in their usage location. These users are silently missing mailboxes, Teams or apps they are paying for.
No user has a licence assignment error.