--- id: BSN name: Beginning Segment for Ship Notice purpose: To transmit identifying numbers, dates, and other basic data relating to the transaction set. elements: - { ref: BSN01, id: '353', req: M } - { ref: BSN02, id: '396', req: M } - { ref: BSN03, id: '373', req: M } - { ref: BSN04, id: '337', req: M } - { ref: BSN05, id: '1005', req: O }