Be able to Return / Reverse incorrect despatches against a Sale Order Or items returned by a customer, so they show against the Sales Order.
For example Customer Orders 10 boxes of an item, but its only available in packs of 4, so 12 are sent out. Sales order would be raised as 10 as per Customer Request, but we would despatch and invoice 12. Sales Order would show as 2 overs sent. Customer then return 1 pack of 4 as they decide to have 8 and reorder at a later date. We can then return against the Sales Order and raise the credit direct from the return.
That way when duplicating the order at a later date, we can raise as 8 and advise the customer prior to dispatch.