0SD_C03 - Product Category Not Loading

I have an issue where the field 0PROD_CATEG is not being populated in cube 0SD_C03. Looking at the data from 2LIS_11_VAHDR I see that its trying to map 0PROD_HEIR -> 0PROD_CATEG.

Here is the code for the mapping:

The problem is that product category is all ways blank. The COMM_STRUCTURE-prod-heir is allways '999999999999999'.

I see that product category is an master data info object but we don't use product category. I was wondering if I could swap out 0PROD_CATEG for 0PROD_HEIR but since 0PROD_CATEG is a part of the Key im not sure if its that easy (Or maybe it is).

At the end of the day I want to be able to report on HEIR or Category and say for the month of Jan we sold x number of widget A, B, C. The product category or Heirarchy can help with this if I can get it loaded.

Any ideas whats going on with the code and can I just remove product category and map product heirarchy instead?

Thanks,

larry