Check this alternative if you want the annual budget calculation for parts to apply seasonal fluctuations. The system supports seasonal fluctuations according to the budget charts registered in the Register Budget Chart procedure in the Accounting module.
Select the applicable budget chart for the selected range of parts, as well as to which period the calculation applies. For each month, there is a percentage value (%) in the budget curve. 100% / 12 = 8.33, which means that the annual budget value will be calculated up if the month has a value higher than 8.33 and vice versa.
Formula 2 in the Planning Formulas procedure is used for seasonal fluctuation.
Formula for exponential smoothing, with seasonal fluctuation.