---
id: BAK
name: Beginning Segment for Purchase Order Acknowledgment
purpose: To indicate the beginning of the Purchase Order Acknowledgment Transaction Set and transmit identifying numbers and date.
elements:
  - { ref: BAK01, id: '353', req: M }
  - { ref: BAK02, id: '587', req: M }
  - { ref: BAK03, id: '324', req: M }
  - { ref: BAK04, id: '373', req: M }