If product on an order line must be delivered partially, because of insufficient stock, an extra backorder sales line can be generated within the same sales order.
When the users clicks on the Create backorder menu item on the sales line he gets the possibility to specify:
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The user is able to change the defaulted values in this dialog. On close of the dialog a new sales line will be added to the current sales order. The original quantity is split into two lines now but the total quantity remains the same.
If the user likes to know which warehouse does have sufficient inventory he could use the form Product and supply, Delivery alternatives first as this provides an overview of warehouses with sufficient inventory.
If the full sales quantity is selected as backorder quantity, the original line will be set to sales quantity zero, and the status of the original line will become Cancelled.
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