Advanced Planning Systems (APS) are a key enabler of the supply chain management. However, APS are highly complex and …) -- 2 Hierarchical Planning and the Supply Chain Planning Matrix (Hartmut Stadtler, Bernhard Fleischmann) -- 3 SAP® APO … Planning - Supply Network Planning (Hartmut Stadtler) -- 6 Production Planning and Detailed Scheduling (PP/DS) (Hartmut …