Ideally, you should. But you won’t be penalised if you don’t. If u only remember one person’s name in the case then you can just say eg. Carlill’s case or you can describe the case like “in a case where an advertisement was made advertising a cure for influenza… where such and such happened”. And u def’ don’t need to recall the date 😀 What is important is the point of law and the decision. To read more about how to prepare for F4 check out this OT article https://opentuition.com/acca/f4/acca-paper-f4-exam-technique/ It relieved some of my anxieties 😀