The Deallocate Button is used to de-allocate all or a portion of the allocated quantity for the sales or shop order line that is highlighted when the button is pressed. You may not de-allocate more than the quantity that is allocated to the selected line.
When you select a valid sales or shop order line and press the Deallocate Button, the system will display a prompt so that you can enter the quantity to de-allocate from the order. If you enter a valid quantity (less than or equal to the allocated quantity in the line item) and then press the OK button, the system will update the selected line, and it will re-display the records in the Tab Page that you are in so that you see the updated information for the item.
More: