GR-R-003:Greek invoice type code required
Fix: Invoice Navigator automatically fixes this Invoice compliance issue by updating the relevant XML elements (GR-R-003). Upload your invoice to fix this automatically.
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 rejected by Peppol access points and never reaches 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 — the invoice must be corrected and re-sent before it can reach the recipient.
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.
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Last updated: 27 February 2026
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