The well-known object entry '{0}' already exists in attribute 'otherWellKnownObjects' on container object {1}. It may point ...

The well-known object entry '{0}' already exists in attribute 'otherWellKnownObjects' on container object {1}. It may point to a newly created Exchange Public Folder Administrators universal security group, an invalid DN, or a deleted object. If it points to a newly created object, please re-run the task after the Active Directory data have replicated. Otherwise, please remove the entry and re-run the task.