Planual: Chapter 2 - Engine

2.01-08 Each major hierarchy should have a System module

Create a System module to support all standing data and attributes about the hierarchy (all levels). At a minimum have the code and parent as line items

Exception:

2.01-08a: If the hierarchy is not referenced in a formula, as a filter or a selector module on a dashboard then it is not needed

Best Practice article:

Best Practices for Module Design

Questions on this topic? See 2.01-08 Each major hierarchy should have a System module in our Planual forum.