I am following this micro-lesson
https://anaplanenablement.s3.amazonaws.com/Academy/Platform/Level_3/NMX/L3_S2_T02_NMX/story.html
on compound functions. I understand the overall point that these two functions should not be used in the same line item. However, I am not understanding this specific example. DAT01 is dimensioned by stores, region, time and CAL01 is as well. So the "Original Formula" is housed in the CAL01 module? Why is a SUM required if these modules have the same dimensions? Not understanding why the LOOKUP piece is required in the "Original Formula" in that case. What is the relationship between country and region here?. Would someone be able to clarify how this example works or break it down to explain it. Thanks!
