Administrative acts have an important place in the activities of the administration. Since the fundamental rights of individuals can be interfered with by administrative acts, the administration should pay maximum attention to ensure compliance with the law in their establishment. However, if there is an error in the administrative procedure, the possibility of correcting the error (recovery of it) that does not affect the merits will serve the judicial economy. The errors that do not affect the merits of the administrative act may occur in the element of procedure and form. Even if the administrative acts are canceled due to procedural and formal errors in the judicial review, the administration can eliminate this procedural and formal error and establish a new act aiming the same legal result, which may cause disruption of public services or delay (or violate) the rights of individuals. In order to prevent this situation, the errors are divided into two as primary and secondary within the judicial review in Turkish Administrative Law. Primary format errors are canceled because they affect the result, and unlawful violations are ignored in secondary format errors as they do not affect the result. In the administrative process, it is possible to withdraw the administrative act. In German Law, the subject of administrative act is regulated in detail in the administrative procedure law. It is stipulated that what conditions are required for an administrative act to be lawful and valid, in which case it is null and void, and in this case the procedural and formal errors in the administrative act can be corrected or ignored posteriorly.. In this context, in cases listed in the law, such as not complying with the obligation of justification, which can be seen as a primary form of errors and not recognizing the right to be heard, these procedural rights are subsequently recognized and procedural errors in the administrative act are eliminated. Thus, from the starting of administrative act, it becomes lawful. However, posteriorly correction of these procedural and formal error is only possible if the persons concerned are able to use these rights effectively. The time period within which procedural and form errors can be remedied is also determined in the procedural law. It can be resolved at the administrative stage as well as at the trial stage until the decision on the merits is made. On the other hand, secondary format erorrs are ignored as long as they do not affect the essence of the procedure. Although these do not comply with the law, their cancellation cannot be requested. In German law, it is discussed whether the material errors in the administrative act will be corrected later or not. Some opinions are that the administrative procedure law allows this. However, in Turkish law, since the legal elements of the administrative act are related to public order, it is not accepted to correct later. For example, the approval of the decision taken by an unauthorized administration by the authorized administration for the acceptance of validity does not give correctly and validity to that transaction. The Federal Administrative Procedure Law, which has been in effect for many years in Germany, preserves the principle of legality of the administration regulated in over particularized dealing with the preparation of the administrative act and the objection process, and the provisions regarding the recovery of the procedural and formal errors without the need for a new process. Since Turkish law does not regulate the subsequent corretion of procedural and formal errors, except for simple material errors and tax procedure law, the Council of State ignores secondary errors that do not affect the merits with the case-law it has developed, and accepts that the procedure is in accordance with the law. However, this affects the freedom of claim rights and it can even be considered as a secondary errors in the situation stipulated by the constitution and imposes an obligation on the administration, as well as in showing the legal remedies. The procedural and formal obligation stipulated by the law can only be escalated by another law, ignored or correct in later. Ignoring a form or procedural errors regulated by law by a judicial decision does not make it lawful. Also, a general administrative procedure law, which has become a sine qua non of modern states of law, ensures uniformity in the administrative decision (or acts) gives equal rights to the parties involved in all administrative proceedings, and serves to prevent arbitrariness of the administration, is an essential requirement for Turkey