When doing a pre-migration check or while performing a migration, the following message is displayed:
When using the Insane Mode, it is necessary to have the site collection administrator permissions at your destination.
In the migration tool, Insane mode for Microsoft 365 uses a migration API that requires your account to be site collection admin to work correctly.
Note: You can get this message when copying Teams. This is because, behind every team, a Microsoft 365 Group and a site collection are created. You need site collection admin privileges on that site collection to use Insane mode. For more information, see The relationship between Microsoft 365 Groups, Teams, and other services.
Get site collection admin permissions for the user account you use for the migration at the destination.
Tip: You can add site collection administrator permissions within your PowerShell migration script. For more information, see Add site collection administrator.
Note: We advise against using Normal mode as an alternative. Insane mode substantially improves the migration process, and the migration tool requires site collection admin permissions to perform migrations effectively. For more information, see Microsoft administrative permissions.