BSL - Best stocking level Calculation
CY = Number sales during the date range this year and
PY = Number of sales during the date range of the previous year
WF 1 = Weighting factor for the most recent 12 months
WF 2 =Weighting factor for previous 12 months
If part has been in inventory less than 24 month or the date history began is less than 24 months then WF1 = 1 and \WF2 = 0
BSL = Round((CY * WF1) + (PY * WF2)
INC = Percentage Increase (+) or Decrease (-)
BRP - When the stock order should trigger
BRP = Safety Stock + Average Daily Usage X Lead time
Also needs to take into account full bin quantity so on hand will not exceed this number and per job quantity.