--- id: LIN name: Item Identification purpose: To specify basic item identification data. elements: - { ref: LIN01, id: '350', req: O } - { ref: LIN02, id: '235', req: M } - { ref: LIN03, id: '234', req: M } - { ref: LIN04, id: '235', req: X } - { ref: LIN05, id: '234', req: X }