In your Microsoft 365 admin center you have options to restrict external sharing for your whole organization.
If your organizational-level external sharing settings are less permissive than your group sensitivity label options, that group sensitivity label becomes invalid and will no longer be usable for categorization in ShareGate Apricot.
To be able to use the label, you can use one of the solutions below:
- Modify your group sensitivity label to match your organization-wide external sharing settings
- Modify your organization-wide external sharing settings to allow the group sensitivity label to be used.