BOM item "PROD21" is consisted of "COMP21" and "COMP22".
they use the same cost version, cost price for both "COMP21" and "COMP22" are activated, but i cannot get the cost price for BOM item "PROD21" while i was trying to run the cost price calculation.
Inventory model for BOM item "PROD21" is standard cost, for "COMP21" and "COMP22" is weighted average.