Oklahoma Requisition is a method of obtaining approval for goods or services from the State of Oklahoma. It is used as a way to get a purchase order from the state for a specific item or service. Oklahoma Requisition is a form of procurement that allows state agencies to make purchases without going through the formal bidding process. There are two types of Oklahoma Requisition: Standard Requisition and Open Market Requisition. Standard Requisition is used when the item or service is only available from a specific vendor, and Open Market Requisition is used when the item or service is available from multiple vendors. Both types of requisitions require approval from the state before the purchase can be made.