Only one invoiced object is allowed on document level

Only one invoiced object (ibt-018) is allowed on document level.

Fails

<Invoice>
  <cac:AdditionalDocumentReference>…</cac:AdditionalDocumentReference>
  <cac:AdditionalDocumentReference>…</cac:AdditionalDocumentReference>
</Invoice>

Fix

Keep a single cac:AdditionalDocumentReference here and delete the duplicates. If both values matter, one of them belongs in a different field.

Schematron

Context

/ubl:Invoice | /cn:CreditNote

Test

(count(cac:AdditionalDocumentReference[cbc:DocumentTypeCode='130']) <= 1)

Official text: Only one invoiced object (ibt-018) is allowed on document level.

Official · PINT shared rules. Severity: error. Runs on UBL XML.

Check an invoice