What action creates an (Only) level?

In Workday Adaptive Planning, a level's type is determined by its position in the hierarchy. A level with no children is designated as an "(Only)" level. A level with children is a "Rollup" level. When you add a new child level under an existing level, the parent becomes a "Rollup," and the newly created child level, having no children of its own, is by definition an "(Only)" level. Therefore, the action of adding children to create a rollup structure simultaneously creates new "(Only)" levels.

B. Creating a formula on a level does not determine its structural type; formulas can be applied to both Rollup and (Only) levels.
C. Importing data does not alter the defined structure of levels; it only populates the model with values.
D. Creating multiple versions provides different scenarios for data but does not change the core level hierarchy.

1. Workday Adaptive Planning Documentation, "Modeling: Building Your Model," Section: "Working with Levels," Topic: "Level Types." This section explains that a level's type (Rollup or Only) is determined by whether it has descendants in the hierarchy.

2. Workday Adaptive Planning Administrator Guide, "Managing Structural Elements," Chapter 3: "Levels," Paragraph: "Creating and Editing Levels." The guide details how adding a child level to a parent defines the parent as a rollup and the new child as an (Only) level.