Hi Alex
For example, you have stock of 1000 Qty which is about to expire on 31 Dec 2016, then ideally you will see 1000 Qty Expiring Quantity. But if you total demand of 800 till Dec 2016 then you should see only 200 as Projected Wastage Quantity Qty.
Please cross check from your side and close the thread according to How to close a discussion and why
Thanks
Amol