--- id: PID name: Product/Item Description purpose: To describe a product or process in coded or free-form format elements: - { ref: PID01, id: '349', req: M } - { ref: PID02, id: '750', req: O } - { ref: PID03, id: '559', req: O } - { ref: PID04, id: '751', req: O } - { ref: PID05, id: '352', req: X }