I found this tidbit while studying for the 70-640/649 exam.

You can use the Microsoft Group Policy Diagnostic Best Practice Analyzer (GPDBPA) tool to collect data about an environment’s Group Policy configuration. For example, you can use this tool to analyze a Group Policy configuration for the following purposes:

  • To search for common configuration errors
  • To discover and to diagnose problems
  • To collect data for archiving

For more info check out.