Aggregate slack control is based on the following
consideration: while defining the annual budget,
Sales may provide a reliable estimate of the expected
(non-redundant) demand by making an aggregate
forecast over a wide time period for a
product family. Let A,, R denote this forecast over
a TLT + 1 period, where F is a product family and
R is a specific market area served by the company.’
Whenever the MPS is processed, &, R allows to
measure the aggregate percentage of overplanning
OV%,. R implicitly drowned in the forecast orders