If you need to remove an enabler code later, whether or not it is permanently authorized, follow these steps:
Become root on the system where you installed the Backup server software.
Enter the nwadmin command at the shell prompt to start the Backup administration program, or enter the nsradmin -c command to start the character-based interface in visual mode.
Open the Registration window (nwadmin) or edit the NSR_license (nsradmin) resource.
Highlight the enabler code you want to remove and select the Delete option.
You cannot remove a base enabler. You can update a base enabler using the nsrcap -v -c command.