# W-INV184

Source: https://xmlvalid.com/rules/W-INV184

> Use a Valid UNSPSC 19.0501 code

- Level: warning
- Rule sets: OIOUBL 2.1 Invoice rules (Denmark) 1.17.2
- Context: `doc:Invoice/cac:InvoiceLine/cac:Item/cac:CommodityClassification`
- Test: `cbc:ItemClassificationCode and not(cbc:ItemClassificationCode/@listID='UNSPSC')`

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