BR-KSA-33
Each invoice must have an invoice counter value (KSA-16).
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.
Context
/ubl:Invoice | /cn:CreditNote
Test
(cac:AdditionalDocumentReference[normalize-space(cbc:ID) = 'ICV'] and (cac:AdditionalDocumentReference/cbc:UUID) != '')
Checked with Saudi Arabia ZATCA Tax Invoice (UBL), Saudi Arabia ZATCA Simplified Tax Invoice (UBL)