Support for mapping user record using different column in sys_user tableColumn used by default for mapping user records is user_name from the sys_user table, and it expects the user_name to match the user id on the device. If some other column syncs with user id from device, the column can be added with below steps. Along with column name change, prefix and suffix addition is also supported. Eg. user id on device -> abel.tuter user id in sys_user table in column u_user_id : ex.abel.tuter@example.com To handle this use case, you can follow the below steps: Change the application scope from the globe icon on top right to DEX Application and Device Health.Navigate to System Properties > All Properties.Create a new property with suffix dex_user_ref_mapping and type as string, validate that the property name should be sn_dex.dex_user_ref_mapping .Set the property value as a JSON with the required keys (supported keys are prefix, suffix, column). Eg. {"device_user_id_column": "u_user_id", "prefix": "ex.", "suffix": "@example.com"}