You cannot delete a domain if it contains any host. So, you must delete or move the hosts before attempting to delete a domain. For information about moving a host, refer Section 3.2.7, Moving a Host.
On the home page of the console, click Hosts.
The navigation pane displays the current hierarchy of the Framework.
In the navigation pane, select the domain you want to delete.
In the task pane, click Delete Domain.
Click Finish.