@ayman_h by the way, in previous version of the CMDB Workspace (my PDI being on 7.3.5 of the CMDB Worskspace), the columns used to be based on the default sys_ui_list, not hard coded. If you where to change the default layout, it would get reflected ...
For people interested, I created an idea for this. Go up vote it if you need this feature. https://support.servicenow.com/ideas?id=view_idea&sysparm_idea_id=ae86d3fa471326d0343d8b69736d4333&sysparm_idea_table=x_snc_com_ideation_idea&sysparm_module_id...