Jasmine Motor Factors Ltd sells car parts to vehicle repair centres. Customers have a login into Jasmine's parts system which allows them to place orders for parts online. If orders are made on the system before 8 am, Jasmine guarantees same day delivery.

You are planning the financial report audit for Jasmine and are considering how you will be able to use computer-assisted audit techniques to audit the company's purchases system. You know from the previous year's audit that there have been problems with the system accepting invalid inputs from suppliers. You have decided to use test data to check the validity of inputs into the purchase system. You have discussed this approach with Jasmine's staff and they have agreed for you to enter dummy transactions onto the live system.

Required

Identify and explain test data that could be used to gain confidence that Jasmine's purchase system does not accept invalid inputs.