Updating Unit Cost Based on Last Direct Cost
If you are using FIFO you can mostly ignore that unit cost. That field is really just showing your average unit cost for any inventory on hand. You can click on the unit cost to see the breakdown historically and confirm the calculation (Cost Amount / Quantity = Unit Cost). There will be a "Closing entry" for the day that is the average and then the Unit Cost for the actual inventory transaction.
But if you want to change it you can try a few of the following options, these may lead to some validation problems though.
1. You can use a configuration package and disable validation on all fields:
3. If you have any inventory on hand you can try to negative adjust everything and then positive adjust it in at a new cost (you can see in my screenshot above on closing entry for 10/27/2025 that I had two positive adjustments that day - 2 for 8$, 1 for 15$ but I had a negative adjustment of 1 unit which took the 15$ out of inventory first so that daily calculated unit cost is then 8$).
Let me know if that helps!
Teagen