Items for orders can be reserved in xentral in order to reserve them in the warehouse for shipping. You can view all reservations for orders via Warehousing and Logistics → Reservations.
Here you can also delete reservations to orders by using the button with the X on the right side. The auto-ship process (Calculate auto-ship) immediately reassigns the reservations in ascending order (orders ordered first are reserved first), if you have activated reservations in a project (see Project settings, Logistics settings).
You can also prioritize reservations directly in the order.To do this, navigate to Sales > Order and open an order. Then select Reserve all products from the drop-down list in the action menu at the top right.