# PEPPOL-T01-B08901

Source: https://xmlvalid.com/rules/PEPPOL-T01-B08901

> Value MUST be part of code list 'ISO 3166-1:Alpha2 Country codes'.

- Level: error
- Rule sets: Peppol Order rules 3.7
- Context: `/ubl:Order/cac:SellerSupplierParty/cac:Party/cac:PostalAddress/cac:Country/cbc:IdentificationCode`
- Test: `(some $code in $clISO3166 satisfies $code = normalize-space(text()))`

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