PEPPOL-T19-R014
Each Tax Category SHALL have a TAX category rate, except if the catalogue line is not subject to TAX.
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
cac:ClassifiedTaxCategory
Test
cbc:Percent or (normalize-space(cbc:ID)='O')
Checked with Peppol Catalogue