[sgt101]

In big companies there are often things like this, if you have 5K people working in finance or procurement and 1 in 100.. and you run it for 10 years... well you can see where this goes with the tail cases. Things like the person handling the case has a break down, or someone didn't put a transaction lock in the workflow, or two accounts got set up because there was a delay and someone helpfully restarted the set up process.