I am working to set up the effectiveness verification process for corrective and preventive actions at my work. All we are doing now is validating the completion of actions by looking at documents, installing of new tools, etc but not effectiveness. The CAPA are categorized into different groups such as documentation updates, Improve Mfg. Process/Recipe, Poka Yoke, and so on. Is there a guideline as to what kind of verification methods can be used based on action type?