Single source items are very rare. Often, the only sure way to make this determination is to open the purchase for bid. However, if a single source has been identified, the vendor must sign an affidavit to that fact as outlined in the Oklahoma Statutes.

• 19 O.S. § 1501(A)(3)(c)
• 74 O.S. § 85.44D.1

The Requisitioning Officer

For purchases from a single source, the requisitioning officer has the following general responsibilities:

• Prepare justification for making a single source purchase;
• Ensure that the goods or service can only be supplied by one source, if more than Twenty- Five Thousand Dollars ($25,000.00) is to be spent;
• Attach affidavit from vendor to the requisition form;
• Follow normal purchasing procedures as outlined in Chapter Four, “Purchasing Methods and Procedures.”