1.Where there is doubt concerning the authenticity of a licence, certificate or extract, or entries or endorsements thereon, the competent national authorities shall return the questionable document, or a photocopy thereof, to the authorities concerned for checking.
Documents may also be returned by way of random check; in such case only a photocopy of the document shall be returned.
2.Where a questionable document is returned in accordance with paragraph 1, the competent national authorities shall on request give a receipt to the party concerned.