86. Every document that is an order, directive, notice, certificate, formal demand, decision, assessment, discharge of privilege or hypothec or other document purported to have been established under a fiscal law or in the course of its application or enforcement over the name in writing of the Minister, Deputy Minister or a functionary authorized by regulation to exercise the powers of the Minister under this act, is deemed a document signed, made and issued by the Minister, Deputy Minister or functionary unless it has been set aside by the Minister or any person acting on his behalf.