As an administrator, you can delete a physical or virtual network scanner from Symantec Advanced Threat Protection (ATP) as long as that scanner is not part of an all-on-one appliance. When you delete a scanner, it is removed from the Appliances list in ATP Manager; however, none of the events (or other data) associated with that scanner are deleted. This deletion also prevents the management platform from displaying a System Health error message when the network scanner fails to report its status.
Before you delete a scanner, you must first shut it down. Failure to do so may result in that scanner re-appearing on the Appliances list after you delete it.
You can re-add the scanner (for example, to another management platform) by re-imaging the physical appliance or re-installing the virtual appliance.
To delete a network scanner
In ATP Manager, select Settings > Appliances.
From the Appliances list, click the Shutdown Appliance icon for the scanner you want to delete.
Wait a few minutes to ensure that the appliance is completely shut down.
Click the Delete Appliance icon for the scanner that you want to delete.
The Delete Appliance icon only appears for appliances that have the role of Scanner.