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KSEF-SELLER-002 · KSeF · FA(3)

KSeF: seller NIP is missing

The seller identity is incomplete for the intended KSeF record.

FA(3)Last professional review: 2026-07-05

Meaning

The seller identity is incomplete for the intended KSeF record.

Typical cause

The NIP was not extracted, was mapped incorrectly or is missing in the source system.

Affected fields / XML paths

/Faktura/Podmiot1/DaneIdentyfikacyjne/NIP

Invalid example

<Podmiot1><DaneIdentyfikacyjne><Nazwa>ACME</Nazwa></DaneIdentyfikacyjne></Podmiot1>

Corrected example

<DaneIdentyfikacyjne><NIP>1234567890</NIP><Nazwa>ACME</Nazwa></DaneIdentyfikacyjne>

Remediation steps

  1. Compare the source invoice and master data.
  2. Enter the NIP without spaces or country prefix.
  3. Run validation and export again.