The requirements of future production are characterized by increasing demand volatility as well as very short delivery times and high timeliness in the order-based production environment. Furthermore, the trend to customer individual products leads to additional production planning challenges. Therefore, to react fast to these market trends, changeable production networks is a key to success. This technical contribution describes a method for tactical production planning for customer individual products in changeable production networks. The design of the method contains three main process modules (1) order-capability-comparison, (2) capacity planning, and (3) order-specific network structure. Underlying the former described modules, a data model is necessary and introduced. Furthermore, the simulation of the applied system on a prototypical implementation at BSH Hausgeräte GmbH, the largest home appliances manufacturer in Europe, is shown and explained. Finally, limitations are discussed and an outlook into future work for the research field in production planning of production networks is given.