# XV-CZ-15

Source: https://xmlvalid.com/rules/XV-CZ-15

> The company number (IČO) '…' of a party in CZ is not eight digits with a valid check digit.

- Level: warning
- Rule sets: ISDOC amounts and identifiers Standard ISDOC 6.0.2
- Context: `isdoc:Party[isdoc:PostalAddress/isdoc:Country/isdoc:IdentificationCode = 'CZ']`
- Test: `$ico = '' or cz:ico($ico)`

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