Came across this excellent, in-depth article on the failure of Target Canada. One of the issues was that products were routinely out-of-stock in the stores (leading to upset customers) while registering as in-stock in the company's SAP system:

At one point, Target Canada had printed a weekly flyer in which nearly every single item featured on the front cover was out of stock.

Eventually, they find one of the causes of the problem:

A small group of employees also made an alarming discovery that h...