What type of variables can Server Actions have?

Server Actions in OutSystems can indeed have all three types of variables: Input, Output, and Local.

Input variables allow the action to receive data from the caller. This means that when an action is invoked, it can accept parameters that are necessary for processing, making it versatile and allowing for dynamic data handling based on the caller's needs.

Output variables are used to return data from a Server Action back to the calling module. They provide a way to send results, such as data retrievals or processing outcomes, back to where the action was invoked. This is key for conveying the results of the operations performed within the action.

Local variables are declared within the action itself. They are used to store temporary data necessary for intermediate calculations or transformations while the action is executing. These variables are not accessible outside the Server Action, which encapsulates their usage.

Having all three types of variables provides robust functionality for data manipulation, enhances modularity, and supports the efficient flow of information between components in OutSystems applications.