Inventory

I need someone to help me with Inventory. I keep getting this result when trying to enter purchases in as per a bill. I for the life of me cannot fix it. I have made adjustments on costs and amounts and it still keeps happening. Originally the items were entered in when they transferred over from another product with a zero amount in the $ value but it had a value in the quantity.

Processing this purchase would leave the item CRCR6 with a positive on hand quantity and a negative value in inventory.

Thank you.