I think the following print screen is a bit confusing if we go back to the requirement, we don't need to calculate Baseline Forecast for FY21 and it should be 0 but the print screen is showing Forecast values for FY21?
Do we need to populate DEM03\FY21 Baseline forecast before creating the line chart view or is should stay 0?
In the module DAT03 Historic Volume, you calculate the base forecast for 2020, so you can use it to later calculate the base forecast for 2021 in the module DEM03 Demand Forecast If you follow the green line you will see that the value in Week1 2021 is calculated based on the forecast in the same week of 2020 multiplied by the growth rate.
So yes, the Baseline forecast should be 0 in DAT03 but then you have to calculate it's value based on a different formula (growth)
Einas "Give a Man a Fish, and You Feed Him for a Day. Teach a Man To Fish, and You Feed Him for a Lifetime"