# ibr-sr-63

Source: https://xmlvalid.com/rules/ibr-sr-63

> A Specification identifier must not contain a wildcard character such as '*'. (ibt-024)

- Level: error
- Rule sets: PINT Billing rules 1.1.3, PINT Billing rules (as shipped with PINT AE) 1.0.4
- Context: `/ubl:Invoice | /cn:CreditNote`
- Test: `not(contains(normalize-space(cbc:CustomizationID), '*'))`

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