Suing Accenture over a failed core-systems project, seeking ¥12.4 billion (2023)

Where responsibility divides — an old question, freshly asked

The heart of this dispute is an old and recurring question: when a large systems development collapses, how much of the responsibility falls on the vendor and how much on the user. The vendor is held to a “project management duty” that covers not only tracking progress but explaining whether cost and schedule need to be revised; the user is held to a “duty of cooperation” — providing information, putting the right organisation in place. On the standing of keystroke testing and on whether requirements were properly presented, the two sides’ accounts remain at odds.

In past case law, there are almost no examples of responsibility for a failed development being assigned to the vendor or the user alone. The dispute between Nippon Express and Accenture likewise turns on how the court judges whether both parties exhausted their dialogue and discharged their duties, and as of this writing it remains pending. Beyond the loss of an investment on the order of ¥12.4 billion, the case can be read as a mirror held up to the relationship between client companies and their vendors.