This activity is used to calculate historical average daily usage based on
historical issues. Issues within the rolling horizon will be considered in the
calculation. All parts which are defined as buffered parts will be considered.
It is advisable to perform this job if there is a change in unprotected lead
times of the parts, lead time category or the variability category defined for
the parts. All the buffered parts will be considered in the calculation. Output
of the calculation may or may not be used in other calculations depending on
how the Auto Update set up has been done for a particular part in the
Buffer Part Attributes page.