Do screens have Output Parameters?

Screens in OutSystems do not have output parameters because their primary function is to present data and collect input from users. Instead, they are designed to receive input parameters that help in rendering the screen and defining its behavior based on user interactions or other inputs.

Output parameters are typically used in actions and aggregates, where the result of an operation or data retrieval needs to be communicated back to other components. In the case of screens, they primarily act as interfaces for displaying and interacting with data rather than processes that yield outputs.

The misconception that screens might have output parameters could arise from thinking about how data flows within an application or from other types of elements that do support output parameters, but screens specifically are structured to handle input rather than return values. This design choice supports the overall architecture of OutSystems, where actions define outcomes, while screens facilitate user experience.