Hi @Eka.PLN , Thank you for posting to the community. Could you please check below? 1) Go to the below URL (log in using root credentials) http://<controller_hostname>:<controller_port>/controller/private/ControllerFlagsServlet 2) Search for the property, appdynamics.restapi.healthrule.violations.listing.optimization.enabled 3) If the property is true, set it to false 4) Click on Submit button at the bottom Then, please execute the Health Rule Violations API and check the description. Note that appdynamics.restapi.healthrule.violations.listing.optimization.enabled is sometimes set true to improve the performance of Health Rule Violations API. If appdynamics.restapi.healthrule.violations.listing.optimization.enabled is already false, could you please execute the API for other health rule violations and see if you can get full information in the description field? Best Regards, Hiroki ... View more