Unlike other types of transactions in MYOB AccountEdge, once an inventory adjustment is recorded, you can't remove or reverse it.
However, if you need to remove the effects of an inventory adjustment from your AccountEdge records, you can enter a new inventory adjustment that completely cancels the incorrect adjustment. For example, if the adjustment you want to remove is for an increase of 20 gadgets, create a new inventory adjustment of -20 gadgets to cancel the incorrect adjustment.
Adjust Inventory Overview - Removing and reversing inventory adjustments