ABSTRACTBasic characteristics of an assemble‐to‐order environment make effective master scheduling extremely difficult. Limited resource capacities and dynamic customer end‐item demand contribute to the complexity of the master production scheduling problem. To gain flexibility and responsiveness within this system, the master production schedule (MPS) focuses at the component level. This research proposes a master scheduling technique for manufactured components which combines a multiobjective capacitated multi‐item/multi‐stage lot‐sizing model with an interactive multiple objective optimization solution procedure. To evaluate the model's performance as a realistic and practical master scheduling tool, this study focuses on the National Cash Register (NCR) electronics manufacturing facility in Columbia, Sou