Message

Attribute 'listID' MUST contain value 'ISO3166-1:Alpha2'

Context
/ubl:Invoice/cac:PaymentMeans/cac:PayeeFinancialAccount/cac:FinancialInstitutionBranch/cac:FinancialInstitution/cac:Address/cac:Country/cbc:IdentificationCode
Test
not(@listID) or @listID = 'ISO3166-1:Alpha2'
Usage
/ ubl:Invoice / cac:PaymentMeans / cac:PayeeFinancialAccount / cac:FinancialInstitutionBranch / cac:FinancialInstitution / cac:Address / cac:Country / cbc:IdentificationCode / @listID