Sage 100

Another Purchases Clearing problem. MAS 90 4.4.4 Report shows FIFO Item: 3000 ordered, 2655 received, 2654 invoiced, unit cost $15.85, Purchases Clearing -$2063.49. How could this be? Rebuilt the sort files, ran Purchases Clearing by Product Line - same results. PO Header and Detail files look fine. Where could this negative number be hiding? Or if this is a calculated field not stored anywhere, what could cause this number to be so far off?

I would look at the complete receiving history of the purchase order. That should give you a hint.