You can customize the predefined assets based on your business needs. However, you can't delete any predefined assets.
You can customize assets in the following ways:
•Modify the display name of any predefined business entity, predefined business application, predefined job definition, or source system. However, you can't modify the display name of the predefined assets page, relationships, components, predefined reports, report sets, or rule specifications.
•Modify the display name of predefined business entity fields.
•Disable predefined rule specifications.
•Disable predefined optional fields that have no dependent objects.