Enable search on all knowledge bases Configure the knowledge base search source in the service portal to perform a search on all knowledge bases. Before you beginRole required: admin About this taskBy default, the knowledge base search source in the service portal is set to search only a single knowledge base, which by default is set to the IT knowledge base. Procedure Navigate to Service Portal > Portals > Service Portal. Clear the entry in the Knowledge base field. Click Update. In the Search Source related list, select Knowledge Base. In the Data Source tab, go to the Data fetch script field and delete or comment out line 7. Click Update. When you perform a keyword search in the service portal, the knowledge base search source performs the search on all knowledge bases.