Before the Subnetwork Controller network category can be removed, the asset group and asset type must be removed from the subnetwork definition for Valid Subnetwork Controllers.
Explore the network properties for the specific domain network. Review the Tiers section to identify the specific tier the asset group and asset type is listed under for Valid Subnetwork Controllers. Remove the asset group and asset type from the subnetwork definition of the tier using the Set Subnetwork Definition tool.
Learn how to access the utility network properties
Learn how to set or modify the subnetwork definition for a tier