Guidelines regarding the payment of suppliers are stored in the Finance Unit. Those wishing to purchase from suppliers must adhere to the following rules. Firstly, a request for a quote must be issued to at least three suppliers which will detail the unit cost, delivery time and total cost of the purchase. Only budget holders are permitted to decide upon what quote should be accepted. Once the quote has been accepted, a purchase order is issued by the Finance Unit to the relevant supplier. The invoice should be sent directly to the Finance Unit upon receipt by the budget holder where it is compared to the Purchase Order for accuracy.