An arbitration clause inserted in a public contract is void when it has not been preceded by the required prior authorisation from the governing body of the administration, as provided by Article 1(19) of Law 190/2012, or when it has not been indicated in the tender notice or invitation, as provided by Article 209 of Legislative Decree 50/2016. In both cases, this renders the arbitration clause inapplicable and establishes the jurisdiction of the ordinary courts.