Message

[PEPPOL-T002-R020] listID for TenderLanguageLocaleCode MUST be 'ISO639-1'.

Context
ubl:ExpressionOfInterestResponse/cbc:TenderLanguageLocaleCode
Test
normalize-space(./@listID)='ISO639-1'
Usage
/ t002:ExpressionOfInterestResponse / cbc:TenderLanguageLocaleCode / @listID