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KSEF-STRUCT-001 · KSeF · FA(3)

KSeF FA(3): missing “Faktura” root element

The XML file does not match the expected FA(3) document structure at root level.

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

Meaning

The XML file does not match the expected FA(3) document structure at root level.

Typical cause

An internal intermediate format, wrapper or XML export from another system was often uploaded.

Affected fields / XML paths

/KSeFInvoice/Faktura

Invalid example

<KSeFInvoice><Invoice>…</Invoice></KSeFInvoice>

Corrected example

<Faktura xmlns="http://crd.gov.pl/wzor/...">…</Faktura>

Remediation steps

  1. Identify the XML source.
  2. Use the FA(3) generator instead of an internal wrapper.
  3. Validate namespace and root again.