From the ax white paper example,
We receipt 2 item and sell 1 item.
After that we post invoice for the receipt, the invoice will include the selling item for sure.
What if we have another scenario, we have another receipt
Oct, 2 receipt 1
Oct, 3 receipt 2
Oct, 5 sell -1
How can we know what is the item that we sell ? Is it FIFO ?