Why can't I create calculation components or component details for a personal calculation card?

The calculation card determines which components and component details you can create. For some card types, you can only create one calculation component of any particular type.

If you're trying to create a calculation component that varies based on one or more references (such as a tax that varies based on a person's place of residence), you must select the reference in the Calculation Card Overview pane before you can add the component. You can't create component details until you create a calculation component.