You can delete only those network templates that are not applied to any Kaspersky NGFW device. If you want to delete a template that is applied to a device, you must first change the template for that device.
To delete a network template:
In the main menu of the Open Single Management Platform Console, go to the Application & Services → NGFW section.
Select the Network templates tab.
Select the check box next to the network template that you want to delete.
In the upper part of the workspace, click the Delete button and confirm the action.