The certificate must be apostilled if the host nation is a signatory to the Hague Convention. The certificates must be attested by the embassy of the nation you plan to visit if it is not a signatory to the Hague Convention. Attesting a certificate in Germany involves verifying each and every piece of information on the document to ensure its validity. The document is then verified, and the appropriate individual then adds the official seal or stamp. Your document has been authenticated and correctly confirmed, as shown by the official seal that is attached to it. The document will then be valid for usage in the host nation.