The Cause of Action (The Claim) in The Rights of Iran

One of the things that have been accepted as a principle in civil procedures is related to the principle of invariance of action elements[3]. As no mentioned and discussed to this principle in our legal literature and law, thus the aim of this paper is to explain the elements of the action and the cause of action factors under the evaluation on the possibility of its alteration during the proceedings or meet to the latter part of Article no. 98 of the Civil Procedure Act that the masters of Civil proceeding Procedures have been little studies in the given books and articles before. Principles and theories of matter and use of resources and reference detect binding force are studied at this aim and introduced and discussed, the rules, documents and national legislation on the cause of action discussed. This does not mean a reduced role for the parties. Acceptance of the objections that cannot be limited to certain cases, but it would be subjected to some exigency and privative elements. Therefore, in this research, due to materials of CPA[4], the elements and causes of action shall be defined and it was studied how to change it in practice.