Thank you Robert!
I have other question, can you give some suggestion?
Now, my customer want to add Text field to Subnet Line and automatic assign value by District Code to filter and display on map. But I can not edit in ArcGIS Pro, attribute rule also not work because this field for Subnetwork Line in calculation rules is read-only. But if I add Subnet Line on web map, I can edit feature and field. Do you have any ideal?
Thank you so much!