PEPPOL-T19-R015
When TAX category code is "Standard rated" (S) the TAX rate SHALL be greater than zero.
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
not(normalize-space(cbc:ID)='S') or (cbc:Percent) > 0
Checked with Peppol Catalogue