Hi @Gayathri.N, Thank you for posting to the community. Using Analytics Events API, you can query session data including custom ones using ADQL. https://docs.appdynamics.com/21.7/en/extend-appdynamics/appdynamics-apis/analytics-events-api#AnalyticsEventsAPI-QueryingEvents   Kindly note that you need to create an API key to use Analytics Events API, and make sure to add sessions permission to the API key. https://docs.appdynamics.com/21.7/en/analytics/deploy-analytics-with-the-analytics-agent/analytics-and-data-security/manage-api-keys#ManageAPIKeys-CreateAPIKeys   In addition, please check if session custom data can be searched from the analytics search page. If you cannot search custom data, and if it is associated with Ajax requests, please configure include rules for Ajax requests to be sent to the events service. https://docs.appdynamics.com/21.7/en/end-user-monitoring/browser-monitoring/browser-real-user-monitoring/overview-of-the-controller-ui-for-browser-rum/configure-the-controller-ui-for-browser-rum/configure-which-ajax-requests-are-sent-to-the-events-service Best Regards, Hiroki ... View more