For each order, order lines are examined and the system seeks the inventory available in the default warehouse and status (AVAI by defect) specified on the Item Maintenance page. If for all the lines, available inventory is equal to or higher than the quantity to deliver, the order is deliverable. If not, the shortage list is posted.
Note: This function compares the quantity available in stock for each order line. Two orders can be separately deliverable but that does not mean that both can be delivered because after having dispatched the first order, inventory can become insufficient to deliver the second.
By selecting an order then while clicking on Prepare, the Sales Order Preparation page is posted.