MEA Apostille Attestation Services offers easy and effective document validation services. Get help with the entire validation process and make it simple. Apostille is a validation stamp (in the form of a square sticker) attached to the reverse of a document that ensures its authentication and recognizes its validity in the countries that had signed the international treaty at The Hague Convention regarding the validation of documents in countries other than where the document was issued. Getting a document validated in a foreign country was a complicated matter involving a lengthy process and several authorities. After validation from the relevant authorities in the country of issuance, the document had to be validated by the Consulate of the country where it was to be recognized.