In the procedural system, all proceedings are written as Urquizo Jorge Perez said. For the author the characteristics of written procedural system are: safety and accuracy especially given the demand, defense, counterclaim, studs, objections, exceptions and others, and allows for greater security and consistency to the decisions of judges. For the author adopts the system our legislation oral and written system, ie the mixed system. Other systems on the procedural law is the body unit and the plurality of analysis, in the procedural system unit instance there is only one instance, unlike the procedural systems of multiple instance in which there are several instances where rule on the process. The procedural system in Peru is a procedural system of multiple instances, according to the 1993 Peruvian Constitution in Article 139 paragraph 6 provides that rights are principles and the role instance jurisdiccinal plurality. In the Roman law of procedure established five instances are: 1) before the Judge (Judex).
2) Second instance before the judge. 3) Third pending before the magistrate. 4) Fourth delegate instance before the empire. 5) Fifth pending before the Emperor. The plurality system instance has the advantage that the process is solved by different people which are more difficult to go wrong, ie the procedural systems analysis unit is easier to make mistakes the judge to resolve the cases before it. Other procedural systems are unique system of courts, the plurality system of courts and the mixed system. The first system is characterized by the process that decides who is a single person, in the second trial system are several people who meet the process, and mixed procedural system are several instances in which there is both procedural systems, in that sense the Peruvian State is enshrined mixed procedural system in the courts that resolves a person and the Chambers resolve several people.