Error Guide

🇬🇷 GR-R-006: Greek Suppliers must provide the VAT number of the buyer, if the buyer is Greek in Greece

ErrorPlannedNeeds Input

When both supplier and buyer are Greek, the buyer's VAT number must be provided. This is required for domestic Greek transactions.

Quick Facts

Severity

Error (rejection)

Ruleset

CIUS-GR (Greece)

Mandate

Planned

Fix Type

Needs input

Why This Matters in Greece

Greece is planning e-invoicing using myDATA XML, EN 16931, Peppol BIS 3.0 (for B2G delivery). Invoices with this error will be rejected. They cannot be processed for Greece compliance.

How to Fix GR-R-006

This requires user input to resolve. Review the relevant cbc: and cac: elements in your Invoice XML and provide the correct value. (GR-R-006).

Example: Before & After

Before (invalid)

<Invoice>
  <!-- Issue: Greek Suppliers must provide the VAT number of the buyer, if -->
</Invoice>

After (fixed)

<Invoice>
  <!-- Issue resolved per CIUS-GR (Greece) -->
</Invoice>

Greece E-Invoicing Requirements

Phase

Status

Scope

myDATA reporting

Live (Jul 2021)

All businesses (mandatory)

B2G

Live (Sep 2025)

All public contracts

B2B Phase A

Live (Feb 2026)

Large businesses (>€1M revenue in 2023)

B2B Phase B

Oct 2026

All remaining businesses

Common Causes

•Buyer VAT number missing on Greek-to-Greek invoice
•Customer master data incomplete
•Private consumer sale missing buyer ID
•ERP does not enforce buyer VAT for domestic
•Buyer VAT stored but not exported

Fix GR-R-006 automatically

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

Try the Validator Greece Guide →