How to manage inventory issue with landed cost applied without LCM module in R12 ?

Hi Group,

For Oracle customers who use R12, average costing, and don't have Landed Cost Management implemented, how can these landed cost be managed ?

Oftenly, materials are received from PO before landed cost invoices are known. As materials are put in subinventory without landed cost, user can issue them. These issues are done with the last average cost, instead of the one which must include landed cost. I know we can do a cost update transaction in INV, but the problem here is a matter of time : the delay between the moment user issue the inventory due to a need  and the time we know the amount of the landed cost invoices can be important.