[BR-CO-27]- Either the IBAN or a Proprietary ID (BT-84) shall be used.
Stored validation assertion
(ram:PayeePartyCreditorFinancialAccount/ram:IBANID) or (ram:PayeePartyCreditorFinancialAccount/ram:ProprietaryID) or (not(ram:PayeePartyCreditorFinancialAccount/ram:IBANID) and not(ram:PayeePartyCreditorFinancialAccount/ram:ProprietaryID))