A mistake is corrected before reaching the customer and the office forgets it. I propose that we retain an essential description of the problem and the remedy.
In the example, a subsequent check intercepts the same difficulty in other cases. You don't have to look for a perpetrator for every accident.
It is necessary to understand whether the problem concerns data, instructions or use of the result. A proportionate organizational memory allows one to learn, preventing correction from remaining a private episode and repeating itself without being recognized.