KSEF-008
Error Guide
🇵🇱 KSEF-008: GTU code missing in Poland
WarningMandatoryNeeds Input
Certain goods/services require GTU (Grupy Towarów i Usług) classification codes. Required for alcohol (GTU_01), fuel (GTU_02), heating oil (GTU_03), tobacco (GTU_04), and other specific categories.
Quick Facts
Severity
Warning
Ruleset
KSeF
Mandate
B2B Mandatory
Fix Type
Needs input
Why This Matters in Poland
Poland requires e-invoicing using KSeF XML format. This warning may cause processing delays in Poland. While not immediately rejected, it should be fixed for compliance.
Invoice Navigator covers 134 KSeF FA(3) rules for Poland.
How to Fix KSEF-008
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
Common Causes
- •GTU requirement overlooked
- •New product without GTU assignment
- •GTU codes changed by regulation
Fix KSEF-008 automatically
Upload your invoice and let Invoice Navigator auto-remediate this error.