Error Guide

🇵🇱 PL-02: Polish invoices should be prepared for KSeF in Poland

InfoMandatoryManual Fix

Polish invoices should be prepared for KSeF. This validation rule ensures Invoice compliance with CIUS-PL (Poland).

Quick Facts

Severity

Info

Ruleset

CIUS-PL (Poland)

Mandate

B2B Mandatory

Fix Type

Manual

Why This Matters in Poland

Poland requires e-invoicing using KSeF XML format. This is an informational notice for Poland e-invoicing. Not a rejection risk, but good practice to address.

Invoice Navigator covers 134 KSeF FA(3) rules for Poland.

How to Fix PL-02

1
Identify the issue in your invoice
Polish invoices should be prepared for KSeF. This validation rule ensures Invoice compliance with CIUS-PL (Poland).
2
Correct this in your invoicing software
Review your Invoice XML structure and correct the issue described by this rule. Check relevant cbc: and cac: elements per CIUS-PL (Poland) (PL-02).
3
Re-export and validate
Generate a new invoice export from your accounting system and re-validate to confirm PL-02 is resolved.

Example: Before & After

Before (invalid)

<Invoice>
  <!-- Issue: Polish invoices should be prepared for KSeF -->
</Invoice>

After (fixed)

<Invoice>
  <!-- Issue resolved per CIUS-PL (Poland) -->
</Invoice>

Poland E-Invoicing Requirements

Phase

Status

Scope

KSeF voluntary

Live (Jan 2022)

All VAT payers (opt-in)

B2B mandatory — Phase 1

Live (Feb 1, 2026)

Large taxpayers (>200M PLN turnover)

B2B mandatory — Phase 2

Live (Apr 1, 2026)

All remaining VAT-registered entities (SMEs, sole proprietors, VAT-exempt businesses)

B2G

Live (Feb 1, 2026)

Included in general KSeF mandate

Financial penalties

Jan 1, 2027

Up to 100% of VAT amount on non-compliant invoices

Fix PL-02 automatically

Upload your invoice and let Invoice Navigator auto-remediate this error.

Try the Validator Poland Guide →