Active Directory Lightweight Directory Services has begun the removal of lingering objects on the local domain controller. ...

Active Directory Lightweight Directory Services has begun the removal of lingering objects on the local domain controller. All objects on this domain controller will have their existence verified on the following source domain controller. 
 
Source domain controller: 
%1 
 
Objects that have been deleted and garbage collected on the source domain controller yet still exist on this domain controller will be deleted. Subsequent event log entries will list all deleted objects.