That's the thing. I don't have a negative inventory. My inventory Quantity on hand has always been a positive number. Somehow the average cost to that inventory item became negative. For example, I have 82 feet of pipe currently in my inventory for an average cost of $4.15 per foot. QuickBooks has the 82 feet however the average cost in the system for pipe is -$819.00. I don't know how our average cost became negative or how to correct this when our inventory has a positive quantity on hand.