you cannot select a purchase contract after the order is created. we are now ready to release orders from the purchase contract. in the vendor reference field, you can enter a reference number or a code that can refer to the purchase agreement in the vendor`s system. in the “document title” field, you can enter a free-text description of the purchase contract. to prevent the use and confirmation of your purchase agreement, mark the status of the contract as completed. you can identify a primarily responsible worker and a secondarily responsible worker in the classification of the sales contract.