---
id: PRF
name: Purchase Order Reference
purpose: To provide reference to a specific purchase order.
elements:
  - { ref: PRF01, id: '324', req: M }
  - { ref: PRF02, id: '328', req: O }
  - { ref: PRF03, id: '327', req: O }
  - { ref: PRF04, id: '373', req: O }