Error Guide

🇬🇷 GR-S-011: Greek suppliers must provide their Seller Tax Registration Number, prefixed... in Greece

ErrorPlannedAuto-fixable

Greek suppliers must provide their Seller Tax Registration Number with the country code prefix. This is the VAT identification for Greek tax purposes.

Quick Facts

Severity

Error (rejection)

Ruleset

CIUS-GR (Greece)

Fix Confidence

75%

Mandate

Planned

Fix Type

Automatic

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.

Invoice Navigator automatically fixes this error. No manual intervention needed.

How to Fix GR-S-011

Invoice Navigator automatically fixes this Invoice compliance issue by updating the relevant XML elements (GR-S-011).

Example: Before & After

Before (invalid)

<Invoice>
  <!-- Issue: Greek suppliers must provide their Seller Tax Registration N -->
</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

•Seller tax registration missing
•Country code prefix not included
•Tax ID without EL prefix
•Field not populated in company settings
•Tax registration stored separately from invoice data

Fix GR-S-011 automatically

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

Try the Validator Greece Guide →