Medshield Medical Scheme, a statutory body registered under the Medical Schemes Act 131 of 1998, made payments totalling R6 110 237 to Yarona Healthcare Network (Pty) Ltd between August 2007 and July 2009. The payments were purportedly for healthcare network management services. Medshield later alleged that no valid service agreement had been concluded authorising these payments and that they were made under a bona fide but mistaken belief that they were owing. Yarona initially alleged the existence of a service agreement but conceded, before trial, that it could not prove authority on Medshield’s side and that no valid contract existed. Medshield sued for repayment based on the condictio indebiti. Yarona defended the claim on grounds including that Medshield’s mistake was inexcusable and that part of the claim had prescribed. The High Court upheld Medshield’s claim, and Yarona appealed to the Supreme Court of Appeal.