A function that adds a related purchase order ID to the column "purchase order" in the sales order grid. would facilitate the handling of both. Instead of accessing the purchase order through the header of the sales order grid the related purchase order can be directly entered through the sales order overview. Currently the only option to enter a purchase order to the connected sales order into the mentioned column is to add the information manually to the connected field “purchase order” in the sales order header. When doing so the information is then displayed on the overview. This automatized process has already been implemented for related intercompany purchase orders and would now be great to have for all normal purchase orders as well.