Inventory Recalculation in PrismERP is used for verifying and recalculating all the mismatch in inventory of your company.
Settings > Inventory > Inventory Recalculation
From the list you can see all the list of Sale delivery of a particular sale or purchase order along with their date of order and amount with branch. On the top right corner there is a button name "Recalculation Verify". By clicking will recalculate and verify all the mismatch in the inventory related to order number. There is a "Next" button below the window on the above pic in order to proceed the recalculation method of mismatch.