Authentication is a process of authenticating or certifying a legal document by the Foreign Office or consular representation of the foreign country where the document is to be used.
It confirms that the signature on the document is genuine, states in what capacity the person was acting, as well as confirming that the stamps and seals used on the document are genuine.
Authentication of a document gives the document the same authenticity in the receiving country as it has in the country where it was issued. The process is simplified in countries which are parties to the Apostille Convention. For further details, please see Apostille.