Unjust Enrichment in South African Law: Rethinking Enrichment by Transfer : Hart Publishing : 9781849462235 : 1849462232 : 10 Jul 2013 : Conventional thinking teaches that the absence of liability - in particular contractual invalidity - is itself the reason for the restitution of transfers in the South African law of unjustified enrichment. However, this book argues that while the absence of a relationship of indebtedness is a necessary condition for restitution in such cases, it is not a sufficient condition. The book takes as its focus those instances in which the invalidity thesis is strongest, namely, those traditionally classified as instances of the condictio indebiti, the claim to recover undue transfers. It seeks to demonstrate that in all such instances it is necessary for the plaintiff to show not only the absence of his liability to transfer but also a specific reason for restitution, such as mistake, compulsion or incapacity. Furthermore, this book explores the reasons for