The Iranian registration system has consistently endeavored to achieve its goal of consolidating ownership rights of owners of immoveable properties and, consequently, reducing civil lawsuits regarding such properties by enacting registration laws, regulations, and directives. However, the recognition of ordinary documents of immoveable property transactions in judicial practice has led to the legislator's failure to achieve these objectives.This research, conducted using the descriptive-analytical method and library research, examines the solutions anticipated in the Law on Mandatory Registration of Formal Transactions of Immoveable Property to realize these goals. The study concludes that the legislator, in this law, in order to enhance the credibility of official documents of immoveable property transactions and to invalidate the ordinary documents of such transactions, has introduced innovations to prevent the preparation of new ordinary documents and to collect existing ordinary documents, including. Establishment of the "Electronic Document Registration System". Determination of three mechanisms for the preparation and formal registration of property transaction documents, Changes in the method of advance construction sales (pre-sale). Launch of the "System for Regulating Informal Documents" Mandatory registration of legal actions concerning properties with ordinary documents in this system.