In the age of globalization, an integrated supply chain management (SCM) is no longer a differentiator to the competitors but rather a basic requirement for success on the global market. A key success factor is the computer-aided planning of production processes. In the last years the requirements increased and the production processes become more complex. Therefore, Advanced Planning and Scheduling (APS) systems are used to improve planning. At the production site of Isovolta AG Werndorf, the Advanced Planning and Scheduling tool SAP APO (Advanced Planner and Optimizer) was implemented. Due to this tool rollout the production planning process should become more flexible and transparent. Furthermore, the software supported planning process should partially be automated and supports the planners. To assure a successful introduction of APO the necessary data and interfaces have to be collected and adapted. This thesis analyzes the necessary requirements for the production planning process and what options APS systems, in particular APO, provide for planning within the enterprise and across the entire supply chain. Applying the SCOR and ARIS models, the core processes, process flows, interfaces, data, involved departments and employees which are important for the implementation process are described. Then the core processes of APS systems, modules and their scope for planning are specified. In the next step the requirements for a successful introduction of APO were collected in a reqirements pyramid. This pyramid contains six levels. Based on the collected requirements, a process model was developed. This process model consists of coherent structure charts. This model provides guidelines to treat all of the defined requirements. Subsequently, this model was applied to the major planning processes of the pro-duction site Werndorf. Finally a summary of the rollout at the production site Werndorf and automation potentials are given.