# PEPPOL-T16-R006

Source: https://xmlvalid.com/rules/PEPPOL-T16-R006

> Each despatch advice line delivered quantity SHALL not be negative

- Level: error
- Rule sets: Peppol Despatch Advice rules 3.5
- Context: `cac:DespatchLine`
- Test: `number(cbc:DeliveredQuantity) >= 0`

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