Prepare a master schedule given this information: The forecast for each week of an eight-week schedule is 60 units. The MPS rule is to schedule production if the projected on-hand inventory would be negative without it. Customer orders (committed) are as follows:

Week Customer Orders 1 36 2 28 3 4 4 1

Use a production lot size of 120 units and no beginning inventory. (In the ATP row, enter a value of 0 (zero) in any periods where ATP should not be calculated. Leave no cells blank - be certain to enter "0" wherever required.)