Buy compares the on-hand plus on-order inventory with the order- point and order-level and
determines if a replenishment quantity is needed and -- when so -- the quantity to buy. When
promotions are included, the optimal buy with promotion is found. When full bin and/or job
quantity constraints are noted, the buy quantities are adjusted to be compliant with the
Compare monitors month-to-date demands and current month forecasts and identifies the
parts where the forecasts are not consistent with demands. The parts that are out-of-line are
rerun in Forecast-Replenish.
Returns identifies all parts and locations with excess inventory and measures the excess for
possible return to the supplier.