Deleting and Renaming Approval Unit Hierarchies
You can delete an approval unit hierarchy if it's not referenced by other application objects such as forms or scenario and version combinations. The Usage tab displays objects that reference the selected approval unit hierarchy and links you to the objects so you can disassociate them from the hierarchy.
You can also change the name of an approval unit hierarchy. Renaming an approval unit hierarchy doesn't affect application objects that reference the hierarchy.
To delete or rename approval unit hierarchies:
If you select an approval unit hierarchy that is referenced by other application objects, an error message is displayed. See Viewing Approval Unit Hierarchy Usage to view and edit the application objects that reference the approval unit hierarchy.