After all items have been checked and placed properly into storage, the packing slips and/or invoices must be retained for accounts payable.
It may be necessary to pay an invoice upon receipt of the supplies. Some companies may offer a discount for quick payment. For example, the invoice may note that if the balance is paid within 10 days, the office may deduct 1% of the total billing. These discount offers must be taken full advantage of as they can add up to significant savings over the course of a year.