I have one location RM/C1. And I find this location as From location in product move with one specific product and get qty done is 80 and then I find this location as Destination location in product move with same product and get 100. So on hand quantity of this product in this location be 20 right? But onhand quantity of this product in inventory report and in product is 12. I think they might be the same , right? When I check it out , that difference 8 quantity is one lot/serial number. But not display this lot/serial is not displayed in on hand quantity.Why?

Thanks for any suggestion.