Attribute domains that are assigned to the asset type field cannot be modified after the network topology is initially enabled. This includes attempting to modify the domain assignment for the asset type field or to change the code or description values for existing domains assigned to asset type fields.
See Utility network management tasks for common configuration tasks and their required network topology state.
Once a domain is added to a utility network, it cannot be modified.
The Utility Network Package Tools can be used to export the current configuration to an asset package, make changes, and create a utility network using the modified configuration.