You can remove Subnets when they are no longer needed based on changing network configurations within your environment.
Note: You cannot delete a Subnet that contains active devices, as the Subnet will be immediately detected again based on device connections. If you attempt to delete such a Subnet, the Subnet will still appear in the list but will be reassigned to the Default Location. Additionally, the CSDB instance for the Subnet (under PRIMARY.CLIENT.SUBNET) will be deleted.
To delete a Subnet:
The selected Subnets are removed from the Subnet list on the Subnets tab.