Administrative acts have certain characteristic elements and qualities: administrative acts attempt to solve problems (whether by individuals, organisations or the public administration itself) which must be assessed by the administrative court in question. Administrative acts are those that emanate from the public administration and serve as a means or decision to enforce its will in the exercise of administrative power. Explicit acts are those that are done expressly (the administration is obliged to take a decision). However, the category of alleged or implied acts is created in order to allow the parties concerned to obtain the necessary effects in the event of administrative silence. Although there are several classifications for administrative acts, we will analyze the following types: However, the legal system imposes a certain control and precautions on these acts to avoid possible abuses of power by the administrative authority. Those acts consist in the fact that, in certain cases, the competent administrative authority has a certain discretion. Discretion therefore does not mean that different interpretations are allowed, but that a scope of action is defined and that the administration has the possibility to act between two or more different modes. These two types differ in the way they express the will of the administration.