HU-R-004
Error Guide
ðŸ‡ðŸ‡º HU-R-004: Hungarian VAT code required in Hungary
ErrorB2G MandatoryNeeds Input
NAV requires Hungarian-specific VAT category codes.
Quick Facts
Severity
Error (rejection)
Ruleset
nav
Mandate
B2G Only
Fix Type
Needs input
Why This Matters in Hungary
Hungary requires (B2G) e-invoicing using NAV XML 3.0, UBL 2.1, UN/CEFACT CII, Peppol BIS 3.0. Invoices with this error will be rejected. They cannot be processed for Hungary compliance.
How to Fix HU-R-004
- 1Map VATEN16931 to Hungarian category
- 2Add codeAAM, TAM, etc.
Hungary E-Invoicing Requirements
Phase
Status
Scope
RTIR (all invoices)
Live (Jul 2020)
All VAT-registered businesses — every invoice reported
NAV XML 3.0
Live (May 2025)
Version 3.0 mandatory (2.0 discontinued)
B2B e-invoicing (energy)
Live (Jul 2025)
Electricity and gas sectors
B2B e-invoicing (water)
Jan 2026
Water utilities
Full B2B mandate
2027+
Expected under ViDA
Common Causes
- •Missing Hungarian VAT code
- •Wrong mapping
Fix HU-R-004 automatically
Upload your invoice and let Invoice Navigator auto-remediate this error.