We use FIFO.
But we sale product to sub companies that resale in their market (i.e. Australia).
So when we send to the Australian company we prefer to use LIFO so that we get product that has the "best" expiration date. It has to last across the water and then also have time to sell it.
Can you change valuation methods for certain transactions?
We do not use serial numbers (but are currently researching possible WMSs to tie into GP). Is there another way to handle this in GP?