# SDI-00430

Source: https://xmlvalid.com/rules/SDI-00430

> 2.2.2.2 <Natura> presente a fronte di 2.2.2.1 <AliquotaIVA> diversa da zero

- Level: error
- Rule sets: SdI checks (FatturaPA ordinary invoice) Specifiche tecniche 1.9.1
- Context: `/p:FatturaElettronica/FatturaElettronicaBody/DatiBeniServizi/DatiRiepilogo`
- Test: `$rate = 0 or not(Natura) or $type = 'TD16'`

In English: A summary (2.2.2) with a VAT rate that is not zero has a Natura; only a TD16 document may have both.

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