...
+ Document: Documents can be uploaded/linked to the order.
Ordered: The button is available on a purchase order in the status ‘Need'. When the order is set to the status 'Ordered', the 'Order date’ and 'Ordered by' (logged in user). Buttons for, among other things, 'Goods receipt' and 'Confirmed' will be available, and it is no longer possible to select/click on the 'E-mail' button, see details below.
+ Invoice control: Created from the purchase order in the status 'Received'
Edit: For example, new purchase order lines can be added to a purchase order.
...