GR-R-003:Greek invoice type code required
myDATA requires specific Greek invoice type classification.
Engine Classification
Ensure Greek MARK (myDATA) number is present for Greek invoices
Confidence: 80% · Applied automatically in pipeline
What is GR-R-003?
GR-R-003 is a fatal validation rule defined in the CIUS-GR (Greece) specification (GRC national rules). It validates the ID element in the UBL invoice XML.
When this rule fires, the invoice is non-compliant and will be rejected by Peppol access points and national validation services. The sending system receives a rejection response and the invoice does not reach the buyer.
Target path: //cac:AdditionalDocumentReference[cbc:DocumentTypeCode='130']/cbc:ID
Why This Error Matters
Invoice will be rejected by Greek validation. Greek VAT format is required for tax identification.
GR-R-003 is a hard failure. Invoices that trigger this rule are rejected at the access point and never reach the recipient. In Peppol networks, this means your sending system receives an MLR (Message Level Response) with a rejection status. The invoice must be corrected and re-sent, adding delay to your payment cycle.
Invoice Navigator can automatically correct this error in your pipeline. The fix is applied with full audit evidence, so your compliance trail remains intact.
Validator Behavior
- ·Causes invoice rejection
- ·Error returned: GR-R-003
- ·Specification: CIUS-GR (Greece)
How to Fix It
Determine type
Based on transaction nature
Add code
1.1 Sales invoice, 1.2 Service invoice, etc.
Before / After
<Invoice> <!-- Issue: For the Greek Suppliers, the VAT must start with 'EL' and mu --> </Invoice>
<Invoice> <!-- Issue resolved per CIUS-GR (Greece) --> </Invoice>
Technical Reference
//cac:AdditionalDocumentReference[cbc:DocumentTypeCode='130']/cbc:IDCommon Causes
- ·VAT number missing EL prefix
- ·Invalid TIN number
- ·Wrong country prefix used
- ·TIN check digit incorrect
- ·Lowercase el used instead of EL
Seeing this in production? The API handles GR-R-003 automatically. See the fix response →
Frequently Asked Questions
myDATA requires specific Greek invoice type classification.
Add Greek invoice type code (1.1, 1.2, 2.1, etc.). Invoice Navigator can help identify and fix this issue.
Yes, GR-R-003 is a critical error that must be fixed.
Related Errors
Last updated: 27 February 2026
Handle GR-R-003 Automatically in Your Pipeline
The compliance engine auto-remediates this error with controlled safety policies and evidence pack generation.