SAP-Centric Projects

Nothing goes without it! The Project System module of SAP (PS) is specifically designed to provide comprehensive and fully integrated project management functionality for SAP customers. When it was originally designed and developed its core functionality was borrowed from and shared with the PP (production planning) and CO (controlling) modules.

Therefore, most PS objects (WBS elements, networks, activities, activity elements) are cost objects similar to cost centers in CO, while networks have scheduling and resource management capabilities that are very similar to PP. Whenever you need flexibility and frequent user interaction for resource loaded scheduling activities, you still feel the remnants of an architecture and user interface that was originally designed for the more static context of PP.  

Shortcomings include user-friendliness since SAP did not manage to satisfactorily put the end user in control to easily manipulate the data. In that respect, SAP's unsurpassed enterprise functionality often is perceived as an issue by end-users. Also, and somewhat ironically, PS and PP are not seamlessly integrated. This means that costs or dates do not roll up or cannot be pushed down between PS and PP.