errorGRPEPPOL_BIS
GR-R-004-1:When Supplier is Greek, there must be one MARK Number
Greek supplier invoices must include one MARK (Μοναδικός Αριθμός Καταχώρησης) number. This is the unique registration number from the Greek myDATA system.
We can help you fix this
NEEDS INPUTRequires user input: MARK number from myDATA system. User must register invoice with AADE and provide the MARK.
Simple form - we handle the XML for you
Upload and Answer QuestionsWhy This Error Matters
Invoice will be rejected by Greek validation. MARK number is mandatory for Greek e-invoicing compliance.
Common Causes
- MARK number not included in invoice
- Invoice not yet registered with myDATA
- ERP does not capture MARK numbers
- MARK field not mapped in export
- Manual invoice without myDATA registration
Frequently Asked Questions
Greek supplier invoices must include one MARK (Μοναδικός Αριθμός Καταχώρησης) number. This is the unique registration number from the Greek myDATA system.
Greek supplier invoices must include one MARK (Μοναδικός Αριθμός Καταχώρησης) number. This is the unique registration number from the Greek myDATA system. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.
Yes, GR-R-004-1 is a critical error that will cause invoice rejection. It must be fixed before submission to ensure your invoice is accepted.
Many instances of GR-R-004-1 can be automatically corrected using Invoice Navigator's Fixer tool. Upload your invoice and the tool will identify and fix common issues.
See Also
Last updated: 18 January 2026
Share this guide: