Backup Application Permissions
The following table lists required permissions for Azure AD applications that you add as backup applications. Backup applications help to reduce throttling during a backup of Microsoft SharePoint Online and Microsoft OneDrive for Business data.
All listed permissions are of the Application type and required for data backup.
SharePoint Online and OneDrive for Business
Getting download URLs for files and their versions.
Reading SharePoint sites and OneDrive accounts content.
Reading OneDrive accounts (getting site IDs).