Duplicate Entry for ServiceNow Servlet under Graph SetDescriptionThe ServiceNow Performance Dashboard is showing duplicate value under Graph Set field. This article will demonstrate on the investigations and probable use cases, hence in future, if a similar issue is observed, then this can be one of the cause and worth trying to fix. Note - The below steps are applicable to impacted instance only and can be used to validate if the instance is impacted with the issue or not. Under Navigator >> Self Service, Open Home page to open Dashboard.Select "ServiceNow Performance" from the dropdown to load the Performance Dashboard.Expand the Graph Set field - It shows the duplicate values.CauseResidual data from previous versions of ServiceNowResolutionThere are 3 tables that need to be cleaned up to solve this issue. The hyperlinks associated with Table names contains filters which will display invalid data. You can delete that residual data by going to each one of the links below, selecting the last checkbox in the bottom of the page and then clicking on "Delete" in the menu right beside it. But before deleting the data, we need to take backup of data for those table record, so if something goes wrong, you can restore it. Items from "jrobin_graph_set_member" table: https://<Instance_Name>.service-now.com/jrobin_graph_set_member_list.do?sysparm_query=sys_created_on%3Cjavascript:gs.dateGenerate(%272015-01-01%27%2C%2700:00:00%27)%5Egraph!%3Dcd17e25e0a0a0b8500e1b118a9cb7367%5EORgraph%3DNULL%5E Items from "jrobin_graph_set" table: https://<Instance_Name>.service-now.com/jrobin_graph_set_list.do?sysparm_query=sys_created_by!%3Dadmin%5EORsys_created_by%3DNULL&sysparm_first_row=1&sysparm_view= Item from "snc_monitorable_item" table: https://<Instance_Name>.service-now.com/snc_monitorable_item_list.do?sysparm_query=name%3<instance_node_name>&sysparm_first_row=1&sysparm_view= The items that are currently used for Performance Dashboards are: AMBDATABASEMySQL Global StatusServiceNow ServletSlow Pattern