This research work is the result of a series of concerns that became present throughout my training process as a lawyer, which led me to inquire about the problems that have been generated in recent times, where justice has been seriously questioned from different sectors: society, academy and the institutions themselves. In this endless number of criticisms, the issue of the adversarial criminal system in Colombia is considered a fundamental part of the problems inherent to the effectiveness of the justice system today, since in the process of formulation, discussion and implementation of Law 906 of 2004, it would seem that it was minimized, it seems that the importance was minimized or overlooked the fact of carrying out a control of legality on the power of the State to accuse a citizen when he has committed a conduct that allegedly has the characteristics of a crime, especially when we are in the presence of a Social State of Law, which must guarantee the protection of fundamental rights inherent to the human being. The accusatory system was presented as an innovative response to the old mixed inquisitorial model, which in a certain way restricted the guarantees of the subjects involved in the criminal process. Unfortunately, its operation during this time has revealed a set of gaps that ended up going against the motivations with which the Law was enacted, to the extent that it did not take into account important aspects such as the inclusion of a series of rules aimed at achieving the link between the structural phases of the process, with the so-called "intermediate stage of the accusation", located, as it is logical, between the investigation and the trial. This stage is intended to carry out a material control of the accusation and would result in the implementation of a true filter that purifies and ensures that the criminal proceedings are properly grounded and structured in terms of an accusation that does not lack a specific factual charge, an accusation that does not exceed the factu