While creating a workflow and configuring the ‘Move’ activity, you may notice that (Managed Unit) MU’s can be selected as a destination container. But when running the workflow, you’ll find that the moving of the object(s) fails and the following error may be displayed in the ‘Run history’:
Administration Service encountered an error when moving the object 'CN=Contoso,CN=Users,DC=Contoso,DC=com'. A device attached to the system is not functioning.
MUs work on a membership basis, any attempts to move object(s) to a MU will fail.