Error Guide

🇭🇺 HU-R-003: NAV technical user required in Hungary

ErrorB2G MandatoryManual Fix

NAV reporting requires registered technical user.

Quick Facts

Severity

Error (rejection)

Ruleset

nav

Mandate

B2G Only

Fix Type

Manual

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-003

1
Register user
In NAV Online Invoice portal
2
Get credentials
API key and technical user
3
Configure system
Set up API connection

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

•No technical user
•Invalid credentials

Fix HU-R-003 automatically

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

Try the Validator Hungary Guide →