# PEPPOL-T16-B11901

Source: https://xmlvalid.com/rules/PEPPOL-T16-B11901

> Attribute 'unitCode' MUST be present.

- Level: error
- Rule sets: Peppol Despatch Advice rules 3.5
- Context: `/ubl:DespatchAdvice/cac:Shipment/cbc:GrossWeightMeasure`
- Test: `@unitCode`

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