The
customer has virtually no influence on the final design. They typically will only
have the choice whether to buy the design or not, as the design has already been
decided upon and built by the selling company, In this environment the master
schedule really serves as a final assembly schedule (FAS), and may be thought of
as primarily a finished goods inventory replenishment schedule. Order promising
often does not have to be done through the master schedule, as orders are filled
directly from stock