To configure topic and solution categorization options, perform the following steps:
- On the agent-facing server, use the ATG Control Center (ACC) to access the - //application/service/main/common/src/config/atg/repository/search/indexing/SolutionPropertyAccessor.propertiesfile and set the- defaultTopicIdsparameter and/or the- autoCategorizeSoltuionWithNoTopicsparameter.
- Use the - defaultTopicIdsparameter to assign a default topic to a solution if the solution has no topic.
- Leave - defaultTopicIdsblank or set- defaultTopicIdsto- -1to stop default topic assignment to the solution and the solution from being auto-categorized. The- defaultTopicIdsparameter is ignored if- autoCategorizationSolutionWithNoTopicsis set to- trueand the- defaultTopicIdsparameter is left blank.
- Save your changes and exit the ACC. 
See the ATG Search Installation and Configuration Guide for further information on configuring topics and solutions with Search.

