Sage 100 Advanced 2014 update 5. I'm having a problem with the BOM cost roll up. After the posting of the BOM cost roll up, the inventory valuation report and the GL do not tie. We have a known problem for BOM's with multiple rev's and QOH, the cost change for each rev is booked by the system. I typically just reverse this out and it ties. This time it is not tying after the correcting JE.