Error Guide

🇬🇷 GR-R-001-2: The first segment of Greek invoice ID must be a valid TIN matching the... in Greece

ErrorPlannedAuto-fixable

The first segment of Greek invoice ID must be a valid TIN matching the supplier or tax representative. This links the invoice to the correct Greek tax entity.

Quick Facts

Severity

Error (rejection)

Ruleset

CIUS-GR (Greece)

Fix Confidence

85%

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-R-001-2

The first segment of Greek invoice ID must be a valid TIN matching the supplier or tax representative. This links the invoice to the correct Greek tax entity.

Example: Before & After

Before (invalid)

<Invoice>
  <!-- Issue: When the Supplier is Greek, the Invoice Id first segment mus -->
</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

•First segment is not a valid TIN
•TIN does not match supplier or tax rep
•Wrong TIN used in invoice ID
•TIN format incorrect
•Invoice ID manually created with wrong TIN

Fix GR-R-001-2 automatically

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

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