# aligned-ibrp-003

Source: https://xmlvalid.com/rules/aligned-ibrp-003

> A buyer reference (ibt-010) or purchase order reference (ibt-013) MUST be provided.

- Level: error
- Rule sets: PINT A-NZ rules (Australia and New Zealand) 1.1.3
- Context: `/ubl:Invoice | /cn:CreditNote`
- Test: `cbc:BuyerReference or cac:OrderReference/cbc:ID`

Validate a document against these rules: https://xmlvalid.com/validate