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A Configuration Manager needs to leverage a policy type to automate the creation and assignment of tasks to validate the existence of CIs.
Which policy type should be used to accomplish this goal?
In ServiceNow, validating whether Configuration Items (CIs) still exist is a core CMDB governance activity. Over time, environments change rapidly---servers are decommissioned, cloud resources are torn down, and applications are replaced. If existence validation is not enforced, the CMDB quickly fills with obsolete or ''ghost'' CIs.
Attestation policies are specifically designed to address this need. An attestation policy automatically generates and assigns tasks to responsible users or groups, asking them to confirm that a CI still exists and is still relevant. This process focuses on acknowledgment rather than deep data validation, making it lightweight and scalable across large CMDBs.
Certification policies (Option A) are used when specific attributes must be validated, such as lifecycle status, support group, or environment. While important for data correctness, certification is not intended solely to confirm CI existence. Delete (Option B) and Retire (Option C) policies are lifecycle actions that remove or transition records, but they do not validate existence before taking action.
Attestation integrates cleanly with CMDB Workspace, assigns tasks automatically, and supports auditability---ensuring accountability for CI ownership. This makes it the correct and Data Foundations--aligned policy type for validating CI existence.
Therefore, Option D -- Attestation is the correct answer.