# XV-SA-07

Source: https://xmlvalid.com/rules/XV-SA-07

> The QR code lacks tag …: it must carry tags 1 to 8….

- Level: error
- Rule sets: ZATCA cryptographic stamp and QR code checks Security Features Implementation Standards 1.1, SDK 3.4.6
- Context: `/*/cac:AdditionalDocumentReference[cbc:ID = 'QR']`
- Test: `not($readable) or empty($missing)`

Validate a document against these rules: https://xmlvalid.com/validate