[NL-R-007] For suppliers in the Netherlands, the supplier MUST provide a means of payment (cac:PaymentMeans) if the payment is from customer to supplier
cac:LegalMonetaryTotal[$supplierCountryIsNL]
(/ubl-invoice:Invoice and xs:decimal(cbc:PayableAmount) <= 0.0) or (/ubl-creditnote:CreditNote and xs:decimal(cbc:PayableAmount) >= 0.0) or (//cac:PaymentMeans)