If the deviation happens, firstly we need to locate which one or multiple parts could possibly contribute to the failure of verification. This is very important and may be highly related to small decisions such as design dimensions, wrong analytical method, data collection mistake, and etc. In general, different corrections apply to different causes of failure. Normally, the typical solution will be more management meetings that gathers all team members in the project and talk about the parts that could be most be likely to go wrong. And then, quality control members do another verification after several corrections until they got the successful result.