You can create where-used lists for all IMG activities in a customizing project, in the project management. This tells you whether an IMG activity used in the project is also used in other projects.
You specify whether the where-used list is for all existing customizing projects or only for a specified selection of customizing projects.
The where-used list checks whether customizing objects in the current project are used more than once.
This check function helps you to avoid customizing project overlaps.
Run the where-used list in the Cross-Reference tab.