You are encountering a PolicyCenter Error Code: 3301 pop up error message when selecting a configuration on your PolicyCenter.

The PolicyCenter Error Code: 3301 is a generic error pointing to a configuration error.  This error can be encountered if you have a class with an incorrect matching rule, incorrect partition size, outdated service/plugin, class that doesn't fit under the parent, etc.  This error message may pop up every time you try to do select/change the PolicyCenter configuration.  You may want to look into the configuration and fix any errors.  Once those errors are fixed on your PolicyCenter configuration, then you should no longer see the PolicyCenter Error Code:3301 pop up message when selecting/changing the configuration.