A delivery note is printed in order to ensure accurate delivery of the item as per the provided PO.
You should verify that the Customer Billing Instructions for the customer allow Delivery Note printing. You should also verify that the order activity rules include the status code for printing delivery notes—that is, between shipment confirmation and printing invoices.
When you run the Print Delivery Notes program, the system prints the delivery details that the carrier will use during item delivery. The delivery people will use it to compare the items that need to be delivered with the items that are shipped on the delivery van. To ensure that the customer invoice is perfect, the delivery notes can be printed after shipment confirmation but before you generate a customer invoice for an order.
You can provide delivery notes to a customer only if the customer's billing instructions allow delivery notes. In the Customer Billing Instruction, if you select the Print Delivery Notes checkbox, the system will allow printing of the delivery note.