Final answer:
The minimum role to delete a change is typically the itil_admin role, which has higher privileges than both the itil or admin roles in IT Service Management systems.
Step-by-step explanation:
The minimum role required to delete a change in most IT Service Management platforms, particularly in systems like ServiceNow, is usually the itil_admin role
This role typically has higher privileges compared to roles like itil or admin. The itil role is generally responsible for day-to-day ITIL (Information Technology Infrastructure Library) operations, which includes creating and updating changes, while the admin role has broad privileges across the platform. However, deleting changes is often restricted to ensure that each record of change remains for audit purposes and accountability within the IT infrastructure. Therefore, depending on the system's configuration, itil_admin may have the necessary permissions to delete a change.