This was posted in the LANDESK Service Desk area so I've moved it into Systems and security because this relates to LDMS.
What data are you trying in import? If you are trying to import clients here is a post that might help: Discover unmanaged device using computer name
Other data might need Data Analytics. https://help.landesk.com/Topic/Index/ENU/LDDA/9.5/Content/DA/ldda_t_data_translation_services.htm