Need to fix in Inventory Item maintenance the valuation method to always be "LOT" when a new item is being entered and not allow user to change it.

When a new item code is being  entered although the "product line maintenance"  displays as valuation method "LOT" the user is able to select a different valuation method in item entry and that creates problems.

I do need to stop this from happening and lock down the valuation to LOT only.

Any suggestions are welcomed.

thanks