This is a question which has been asked over the years, e.g. many years ago here:
Re: Explode Bom in Purchase Order without Subcontracting
Our scenario is this: Supplier gives us a significant price break if we buy part A and part B together as kit C. We have no use for part C in our inventory. It is only a purchasing entity. Instead we need parts A and B in inventory. So I wish to issue a PO for C, then upon goods receipt, have the BOM for C explode and show GR for A and B for their respective BOM quantities.
If we issue a PO for A and B as separate line items, we pay their individual (higher) price. So we are forced to buy and receive C, then manually adjust inventory to write off C and write on A and B.
Is there no way to do the reverse of subcontract purchasing through use of a BOM? The only other suggestion I have seen is to create a production order to dismantle it, but I'm unclear on how to do that, as it is something we have never done before.
I would appreciate some guidance. Thank you in advance.