[ibr-155-ae]-Where Invoice transaction-type code (BTAE-02) is X1XXXXXX (Deemed supply), then the document is not required to be exchanged and defined end point (0235:1XXXXXXXXXXX) should be used for buyer.
ibr-155-ae/ubl:Invoice | /cn:CreditNote((matches(cbc:ProfileExecutionID, "^[01]{1}1[01]{6}$")) and matches(cac:AccountingCustomerParty/cac:Party/cbc:EndpointID[@schemeID="0235"],"^1[0-9]{9}$")) or not(matches(cbc:ProfileExecutionID, "^[01]{1}1[01]{6}$"))