# XV-PL-19

Source: https://xmlvalid.com/rules/XV-PL-19

> An advance invoice (ZAL) must describe the order or contract and its value in Zamowienie (VAT Act, art. 106f ust. 1 pkt 4; FA(3) information sheet, Zamowienie).

- Level: error
- Rule sets: KSeF and FA(3) checks KSeF 2.0 invoice verification (9 April 2026), FA(3) information sheet (August 2026)
- Context: `/fa:Faktura/fa:Fa`
- Test: `$kind != 'ZAL' or fa:Zamowienie`

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