DB2 Instance (cmdb_ci_db_db2_instance) hosted on Linux/Unix server might be discovered with different name by Service Mapping and result in multiple CIs created for the same instanceDescriptionWhen you run Top-down (Service Mapping) and Horizontal Discovery for Linux/Unix server running DB2 Instance, there is possibility of multiple CIs created for the same instance."name" attribute is an identifier for DB2 Instance (cmdb_ci_db_db2_instance).Both discovery methods are using the same "DB2 on Linux" pattern. This pattern currently has a flawed logic on retrieving the "name" attribute.Steps to Reproduce Set-up DB2 Instance in Linux/Unix ServerDB2 instance should have different value on "Instance name" (retrieved from running process) and "DB Name"Run horizontal discovery on the Linux/Unix ServerCreate Discoverable Service Map with application that using the DB2 instance. Run Top-down discovery on this mapObserve 2 different DB2 Instances CI created on the Linux/Unix ServerWorkaroundThis problem is currently under review. You can contact ServiceNow Technical Support or subscribe to this Known Error article by clicking the Subscribe button at the top right of this article to be notified when more information becomes available. If you can't wait till then, you can perform the following steps: Open "DB2 on Linux" patternMove "extract the first element" step to before "Get Parent PID data" stepRelated Problem: PRB1596066