For reference materials such as pricing reference materials, follow-up materials, and configurable materials, the system carries out the following checks in the material master:
In Customizing for the Material Master, you can decide not to use certain materials as reference materials. You do this in the Implementation Guide (IMG) activity Make global settings . This has the following effects:
If the reference material has already been used in the system, the use of it cannot be deactivated in this way.