I have been creating the model exactly as per the instructions and training material. However, I am getting the following error in lesson 9 adding formulas to REV05 Price Growth Rates Staging Module.
ERROR : Dimension of mapping used for lookup doesn't match any dimension of the result
FORMULA : 'REV04 Price Growth Rates'.Unit Price %[LOOKUP: 'SYS04 Location Details'.Country, LOOKUP: 'SYS06 Product Details'.Product Family]
Check if in your module there is a space between "Price" and "%" , if not, add.