Message

Value MUST be part of code list 'ISO 6523 ICD list'.

Context
/ubl:Catalogue/cac:ReceiverParty/cac:PartyLegalEntity/cbc:CompanyID
Test
not(@schemeID) or (some $code in $clICD satisfies $code = @schemeID)
Code lists
ISO 6523 ICD list
Usage
/ ubl:Catalogue / cac:ReceiverParty / cac:PartyLegalEntity / cbc:CompanyID / @schemeID