# PEPPOL-T01-B24101

Source: https://xmlvalid.com/rules/PEPPOL-T01-B24101

> Attribute 'unitCode' MUST be present.

- Level: error
- Rule sets: Peppol Order rules 3.7
- Context: `/ubl:Order/cac:OrderLine/cac:LineItem/cbc:Quantity`
- Test: `@unitCode`

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