Final assembly schedule (FAS) entries are needed when end products do not appear in the MPS. These end items are assembled to order or have several customer options that can be combined in various configurations. These products belong to the category of products with variants and options wherein many shippable end-item products are assembled from few standard components (in modular construction and modular design). For these products, two different schedules are required: master production schedule (MPS) for end-item components and final assembly schedules (FAS) for shippable products.
