You need to resynchronize the user entries when two directory sources become out of sync. Use the idsync resync command to create users, user groups, and synchronize user and user group attributes in two directory sources. Specifically, you can use the idsync resync command to populate an empty Directory Server with the existing Active Directory or Windows NT SAM domain users.
The idsync resync command can be used in any of the following ways:
If there are users that exist on Directory Server and Windows, you must run the idsync resync command to synchronize those users.
If you do not want to synchronize existing users to Directory Server, then run idsync resync with the -u argument, which updates the object cache only and does not synchronize the Windows’ entries to Directory Server.
If you have existing Windows users and do not run idsync resync, then changes to these users may or may not be propagated; and depending on flow settings, these users might even be automatically created in Directory Server. You must run idsync resync again, even if you have already run the command.
When the Group Synchronization feature is enabled, both the users as well as the groups associated with the users are synchronized between the data sources configured. No additional options are required while using the resync command for Group Synchronization.