The Doctrine of Basic Structure is a common law legal doctrine which is the most fundamental judicial principles connected with the Indian Constitution. It states that the the Indian Constitution had a basic structure, and the Parliament of India cannot amend the same. It was in the case of Kesavananda Bharati v State of Kerela wherein it was observed that the Parliament could amend any part of the Constitution so long as it did not alter or amend the essential features of the Constitution