The Purchase Request screen in the distribution edition gives you the ability to view the request either by item or by vendor. If viewed by vendor, the requests are totaled by vendor. In this way you can get a total for all vendors that have an item source to purchase the item by. If you buy commodity items from more than one vendor and the vendor is selected, your purchase request will show beneath both vendors. Once a vendor is selected and the request is filled, that request would then be removed from the list.
Purchase requests also add a field for freight allowed. Freight allowed is a value for a purchase order indicating that the vendor will pay the freight charges. There are two related options: by dollar amount and by weight. These values are set on the vendor record and will be displayed on open purchase orders, as well as on purchase requests.