Concept of Res Judicata

The concept of Res Judicata finds its evolvement from the English Common Law system, being derived from the overriding concept of judicial economy, consistency, and finality. From the common law, it got included in the Code of Civil Procedure and which was later as a whole was adopted by the Indian legal system.
From the Civil Procedure Code, the Administrative Law witnesses its applicability. Then, slowly but steadily the other acts and statutes also started to admit the concept of Res Judicata within its ambit.