Huummm...!
- Do you have an excel macro to create BOM's in assemblies? (if not, it is not very difficult to find one in the internet). You need to make some modifications
- Before the BOM is created, instead of simply selecting the ActiveDoc, you should select each of the configs. You can create the BOM, for each config, in the same sheet, with no blank lines between them. This BOM I am referring can be only one or two columns (I would think in the part code and config name, for example).
- After BOM creation, for all configs, you should add extra Excel code to compare the items. First you should order the Excel sheet (alphabeticaly, for example). Then see if each line is equal to the following line. Count the number of equal hits and write it on the next collumn. At the end, you will have a list of used qty and select those with n. of hits = 1
Regards