BR-110-SG

Order references in an Invoice shall be provided on either Invoice Line level or on Document level, not both.

error: the document is invalid

What the rule checks

As the rule set's publisher wrote it. The rule runs on every element the context matches, and fails where the test is false; the validator reports the line of that element.

PINT SG rules (Singapore) 1.4.1

Context

/ubl:Invoice | /cn:CreditNote

Test

not(exists(cac:OrderReference/cbc:ID[text()!= 'NA']) and exists((cac:InvoiceLine | cac:CreditNoteLine)/cac:OrderLineReference/cac:OrderReference/cbc:ID))

Checked with PINT SG Invoice, PINT SG Credit Note