In the SAP item master data it shows one quantity that is on order, but when I add up the total amount outstanding open items it does not sum up to the number on order in the item master data. How can we explain this discrepancy? And yes all items are shipping to the same warehouse.<br/>
I have noticed that this happens when sales orders or production orders are cancelled or changed. It rarely happens, but can be fixed by using the Restore Item Balances feature in Utilities.
I am sure that the folks at SAP will caution to backup data and run this procedure in a dedicated mode.