# ibr-089

Source: https://xmlvalid.com/rules/ibr-089

> Only one invoiced object (ibt-128) is allowed per line (ibg-25).

- 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:CreditNoteLine`
- Test: `(count(cac:DocumentReference[cbc:DocumentTypeCode = 130]) <= 1)`

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