Ruperto is studying law and is taking his first courses. A neighbor has found out about this and asks him about a case he has where he is requesting a concession to provide a federal public service, however this request has not been granted. answered and it's been a few months now. Ruperto, spirited as he is, tells him that he will handle his matter and therefore presents a contentious administrative trial before the Federal Court of Administrative Justice, it is admitted for processing and the corresponding authority is ordered to be summoned, when rendering its report it defends the legality of the The act, however, indicates that the individual administrative procedure has been extinguished to date, thereby issuing a resolution that puts an end to the trial. Ruperto does not understand what this refers to and consults with his teacher who sends him to consult and tells him that there is no longer any matter for the trial and therefore it has concluded. Based on the current standard, what are the reasons that can extinguish the administrative act by operation of law?