Agents Missing/Vanished/Disappeared/DeletedIssue The agents discovered by Agent Client Collector Framework (ACC) will disappear or be deleted or missing from the agent's (sn_agent_cmdb_ci_agent) table.CauseWhen an agent is down/not updated for a considerable amount of time, the below job assumes the record is no longer required.So it triggers a delete action on such records(which are not being discovered for >= 30 days) https://<your-instance>.service-now.com/sys_auto_flush.do?sys_id=d0145b8753d10010086addeeff7b1208&sysparm_record_target=sys_auto_flush&sysparm_record_row=1&sysparm_record_rows=1&sysparm_record_list=tablenameCONTAINSextendedResolutionTo resolve this issue; Simply disable the above table clean-up job (OR)Increase the value (Age In Second) of the above table cleaner job as per the requirements