The Advanced Planner and Optimiser (SAP APO^TM) is the software from SAP dedicated to supply chain management. This book provides an overview about the supported SCM processes and explains how to implement SAP APO^TM in a company. It is written from a long years' experience in implementation projects and aims to provide project managers and team members with the necessary know how for a successful implementation project. The focus of the book lies in introducing modelling approaches and explaining the structure and interdependencies of systems, modules and entities of SAP APO^TM based on the release SAP SCM^TM 2008. Another concern is the integration with SAP ERP^TM, both technically and from a process point of view. Since SAP APO^TM projects differ significantly from other SAP projects, some key issues and common mistakes concerning project management are mentioned as well.