Default portal search sources If you don't define specific search sources for your portal, the system uses default search sources instead. Administrators can use the glide.service_portal.default_search_sources system property to define default search sources. To make changes to the default search sources, navigate to the sys_properties list and search for the default search sources property. Copy the sys_ID of any search source you want to add into the Value field of the system property using a comma separated list. To change the order in which the default search sources show in the Search List, change the order of the ID's in the property. To remove the default search source behavior, delete the property value or delete the value altogether.