XV-PL-03

The NIP … of … has no valid check digit; KSeF's production environment rejects the invoice (KSeF 2.0, weryfikacja faktury).

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

KSeF and FA(3) checks KSeF 2.0 invoice verification (9 April 2026), FA(3) information sheet (August 2026)

Context

fa:Podmiot1/fa:DaneIdentyfikacyjne/fa:NIP | fa:Podmiot2/fa:DaneIdentyfikacyjne/fa:NIP | fa:Podmiot3/fa:DaneIdentyfikacyjne/fa:NIP | fa:PodmiotUpowazniony/fa:DaneIdentyfikacyjne/fa:NIP

Test

pl:nip(normalize-space(.))

Checked with KSeF FA(3)

Check your document

Choose the schema in the validator: it checks the structure first, then every business rule, and points at the line of each failure. It runs in your browser; nothing is uploaded

Validate a document

Related rules

XV-PL-01 KSeF rejects an invoice with an XML processing instruction (…); leave out instructions such as xml-stylesheet...
XV-PL-02 KSeF rejects an invoice with a discouraged Unicode character: U+… in … (KSeF 2.0, weryfikacja faktury).
XV-PL-04 The internal identifier … of Podmiot3 starts with a NIP that has no valid check digit; KSeF's production envir...
XV-PL-05 KSeF accepts an invoice with an attachment (Zalacznik) only from a seller who has registered the option in e-U...
XV-PL-10 An invoice in PLN has no converted tax (…); those fields are for an invoice in a foreign currency (FA(3) infor...
XV-PL-11 An invoice in … must give its tax in PLN as well; missing: … (VAT Act, art. 106e ust. 11; FA(3) information sh...

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