An implementer has created a common control for entity

To automatically associate a common control with all future entities of a specific type, the implementer must configure the relationship on the common control record itself. By adding the entity type (in this case, ABC) to the "Reliant entity types" related list on the common control, a rule is established. Subsequently, whenever a new entity of type ABC is created, the system automatically generates a corresponding control instance for that new entity, ensuring consistent application of the common control across the entire entity type.

A. Set Entity Class to the Entity Type ABC: An Entity Class is a broader grouping than an Entity Type; this action would not create the specific, automatic control relationship.
B. Set Entity Type ABC as a Reliant Entity Type on the Control Objective: This would link the entity type to the objective, not the specific common control that implements the objective.
D. Set Entity Type ABC as a Reliant Entity Type on the Policy: This would link the entity type to the governing policy, not the individual common control.

- ServiceNow Product Documentation, "Create a common control". The procedure states: "To make the control a common control that applies to multiple entities, add entity types to the Reliant entity types related list."

- ServiceNow Product Documentation, "Entity scoping for GRC". This document explains the hierarchy of policies, control objectives, and controls, clarifying that the link for common controls is made from the control record to the entity type.