Notes on Purchase Orders like on Orders

We often get short shipments of items or wrong products delivered or are waiting on another pallet for a delivery which often means we have to be in communication with our suppliers. In the Deliveries page of a purchase order it would be useful to be able to add notes to a P.O regarding what communication we have had back from the supplier, before we write off products etc. We like the notes that are associated with individual customer orders and wondered if something like that could be added? Not everyone has access to the emails so Part Complete POs end up sitting there for some time without knowing why. Notes would make this easier to track.