This teaching case discusses the aftermath of an implementation failure and resultant legitimacy crisis in a national blood bank service. The implementation of the new blood bank system was abandoned after significant loss of public money. This was followed by a review with the Auditor General and a subsequent debate in the public accounts committee of the national parliament. The case follows how the organisation repaired its legitimacy after the implementation failure and how it gained further legitimacy when planning a new implementation. This case helps the students in understanding diverse assessment of legitimacy, appreciating the contextual influences on legitimacy claims, and being able to analyse how legitimacy is managed by the organisation in its institutional context. © Association for Information Technology Trust 2021.