We have defined modes of delivery that are applicable to products based on category hierarchy. Thus, applicable modes of delivery vary between sales order lines and the user has to be able to choose a delivery mode on the sales order header that is applicable to all lines. At the moment, sales order header field "Mode of delivery" shows a dropdown list of all modes of delivery set up in the environment not just the ones that can be applied to the sales order. As a comparison, when creating a similar sales order through POS and choosing e.g operation "Ship all" in the transaction form, only applicable modes of delivery are displayed to be selected.