In order to guarantee the authenticity of extradition documents, the central authority of the requesting Member State shall state in its request that it certifies that the documents transmitted in support of that request correspond to the originals and shall describe the pagination. Where the requested Member State disputes that the documents correspond to the originals, its central authority shall be entitled to require the central authority of the requesting Member State to produce the original documents or a true copy thereof within a reasonable period through either diplomatic channels or any other mutually agreed channel.