If a lens has four entities, which entity within the lens structure would not have a parent reference?

A lens in ServiceNow Strategic Planning creates a custom hierarchical view of planning items. This structure is inherently a parent-child model. The top-level entity is the root of this hierarchy and, by definition, does not have a parent. Each subsequent entity added to the lens (second-level, third-level, etc.) must be linked to a parent entity from the level directly above it to establish its place within the hierarchical structure. Therefore, only the top-level entity would not have a parent reference.

B. Second-level entity: This entity is a child of the top-level entity and must have a parent reference to it.

C. Third-level entity: This entity is a child of a second-level entity and requires a parent reference.

D. Bottom entity: As the lowest level in the hierarchy, it must have a parent from the level immediately above it.

1. ServiceNow Product Documentation - Create a lens for your planning hierarchy: "A lens provides a hierarchical view of your planning items that you can use to plan your work... You can create a lens with up to four levels of entities." This document outlines the process, which starts with a top-level entity and builds downwards, establishing parent-child links at each step.

2. ServiceNow Product Documentation - Configure a lens entity: When configuring a lens entity, the form includes a "Parent entity" field. This field is mandatory for all entities except the first one defined, which becomes the top-level entity. This explicitly shows that all non-top-level entities must have a parent.