Delivery notes are documents which confirm that products are taken of the stock for the delivery to the customer. An invoice must be created from delivery notes because they do not include amounts, just quantities. Backstore allows a customized description to be added to each item on the delivery note. This description, added directly to a document will only be saved for that particular document. Default product description must be added at the product catalog.
In order to add an additional description for a delivery note item, click on the Add description option in the item menu. 
Write the item description and then click on the [SAVE] button.
Item description should be visible on the printed delivery note. In case it's not visible you should check your delivery note templates.