Format errors

• Wrong country code at the start of the EORI.
• Spaces, punctuation, or mixed characters copied from emails or PDFs.
• Transposed digits or missing characters.
• Using a VAT number that is not the issued EORI string in that country.

Validation errors

A not found result often indicates a formatting problem or a timing issue after issuance.

• Re check without spaces and with the correct country code.
• Confirm with the operator which legal entity owns the EORI.
• Re check after customs confirms issuance if the database update is delayed.

Declaration errors

• Using the consignee EORI where declarant EORI is required.
• Mixing exporter and importer roles across documents.
• Using an EORI that belongs to a different group company.

Customs declarations can fail validation when the operator role does not match the declaration field.

Next

Use validation and format guidance before filing.