System Exception – CoreException Thrown by Provider

Error: Exception of type 'Providers.Common.V1.CoreException' was thrown.

This is a generic exception triggered when Sync 365 is unable to access data from the customer tenant due to missing permissions.

Cause: The delegated admin account lacks the required role — typically Application Administrator — in the GDAP relationship assigned to the customer tenant.

Resolution

1. Check the GDAP configuration in Microsoft Partner Center
2. Ensure the security group used in the relationship includes:
   • Your delegated admin account
   • Roles such as Application Administrator and Global Reader
3. Refer to the guide here for step-by-step validation: Checking your GDAP relationship

Once updated, changes may take up to 30 minutes to propagate.