[aligned-ibrp-061]-In case the Amount due for payment (ibt-115) is positive, either the Payment due date (ibt-009) or the Payment terms (ibt-020) shall be present.
aligned-ibrp-061
/ubl:Invoice/cac:LegalMonetaryTotal
((cbc:PayableAmount > 0) and (exists(//cbc:DueDate) or exists(//cac:PaymentTerms/cbc:Note))) or (cbc:PayableAmount <= 0)