Rules / GR-R-004-2 · Markdown

Peppol BIS Billing 3.0 · rule

GR-R-004-2

Layer peppol·Checked against Peppol BIS Billing 3.0 2026.5

What does GR-R-004-2 mean? When Supplier is Greek, the MARK Number must be a positive integer

Why did my invoice fail GR-R-004-2?

When the supplier is Greek, the MARK number — the unique registration number issued by the Greek myDATA platform for the invoice, carried as an additional document reference — must be a positive integer. This Peppol BIS 3.0 Greek country rule enforces the format of the identifier so it can be matched against the myDATA registration.

Official rule text

When Supplier is Greek, the MARK Number must be a positive integer

Common causes

• MARK value contains letters, spaces, or punctuation instead of digits only
• MARK value is zero, negative, or empty
• A placeholder or test value was left in the MARK document reference

How do I fix it?

<cac:AdditionalDocumentReference>
  <cbc:ID>400001839283735</cbc:ID>
  <cbc:DocumentDescription>MARK</cbc:DocumentDescription>
</cac:AdditionalDocumentReference>

Related rules

GR-R-004-1