On 30 April 2013, National Law No. 26.854 was published in the Official Gazette (B.O. 30/04/2013), which regulates the procedure applicable to precautionary measures requested against or by the National State or its Decentralised Entities. The new law was promoted by the National Executive Power on 9 April 2013, together with other initiatives that are part of a package of reforms to the Judiciary, known as "Democratisation of Justice". This law N° 26.854 (B.O. 30/04/2013) tends to partially make up for the absence, in the federal order, of a Procedural Code on Contentious-Administrative Matters. Therefore, the purpose of my research is to determine what these new provisions are and whether some of them affect the Constitutional order. Finally, it is important to note that I will only analyse the articles which, in my opinion, have been most discussed in doctrine and jurisprudence.