# ibr-sr-58

Source: https://xmlvalid.com/rules/ibr-sr-58

> The Invoiced item TAX category code (ibt-151) MUST be present.

- Level: error
- Rule sets: PINT Billing rules 1.1.3, PINT Billing rules (as shipped with PINT AE) 1.0.4
- Context: `cac:InvoiceLine/cac:Item/cac:ClassifiedTaxCategory`
- Test: `exists(cbc:ID)`

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