# ibr-077

Source: https://xmlvalid.com/rules/ibr-077

> Tax accounting currency code (ibt-006) MUST be different from invoice currency code (ibt-005) when provided.

- Level: error
- Rule sets: PINT Billing rules 1.1.3, PINT Billing rules (as shipped with PINT AE) 1.0.4
- Context: `cbc:TaxCurrencyCode`
- Test: `not(normalize-space(text()) = normalize-space(../cbc:DocumentCurrencyCode/text()))`

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