How do you trace mistakes? By noting the Creation Computer and Modification Computer of the record you can quickly know who and when the error was made. The Creation  and Modification fields are located at the top of every info screen. Without placing blame, PestaRoo make it easy to find how/when/where/who made the mistake so additional training can be provided. Also, most major tables are protected by full Change Logs, that allow you see the full history of every change with previous values!