Message

[PEPPOL-T021-R020] List identifier for country code must be "ISO3166-1:Alpha2".

Context
cac:Country/cbc:IdentificationCode
Test
normalize-space(./@listID) = 'ISO3166-1:Alpha2'
Usage
/ t021:UnsubscribeFromProcedureRequest / cac:EconomicOperatorParty / cac:Party / cac:PostalAddress / cac:Country / cbc:IdentificationCode / @listID
/ t021:UnsubscribeFromProcedureRequest / cac:EconomicOperatorParty / cac:Party / cac:PartyLegalEntity / cac:RegistrationAddress / cac:Country / cbc:IdentificationCode / @listID