CIS-DF: Certified Implementation Specialist - Data Foundations (CMDB and CSDM)

IntegrationHub ETL is built to bring external/third-party data into ServiceNow, landing it either in the CMDB or in supported non-CMDB tables, and it routes that data through the Identification and Reconciliation Engine (IRE) so CIs are matched and reconciled rather than blindly inserted. Importing SCCM/Intune data is handled by a dedicated Service Graph Connector, not ETL generically, and Discovery (not ETL) performs active data collection.

Asset-CI Field Mapping is the supported mechanism for synchronizing fields between an Asset and its logically associated Configuration Item. A mapping for Assigned to replicates updates between the related asset and Computer CI automatically, without a custom business rule or a replacement display-only field.

Static CMDB reconciliation rules specify both which data sources are authorized to update class attributes and their precedence. Assigning priorities to the authorized sources determines the authoritative source: a higher-priority source can update an attribute over a lower-priority source.

Principal-class status is configured on an individual CI class in CI Class Manager, under the class’s Basic Info settings. Marking a class as principal enables the Principal Class filter, which restricts Configuration Item lists and reference fields to CIs from those designated classes.