[ibr-137-ae]-Principle ID (BTAE-14) is MUST, where Invoice transaction type code [BT-UAE-002] is XXXXX1XX (Disclosed Agent billing).
ibr-137-ae
/ubl:Invoice | /cn:CreditNote
(matches(cbc:ProfileExecutionID, "^[01]{5}1[01]{2}$") and cac:SellerSupplierParty/cac:Party/cac:PartyIdentification/cbc:ID) or not(matches(cbc:ProfileExecutionID, "^[01]{5}1[01]{2}$"))