What is the Screen behavior when a widget is not valid (Valid property set to False)?

When a widget is not valid due to the Valid property being set to False, the correct behavior is that the screen displays the regular widget while applying specific styling, such as a red border, to indicate that there is an issue. Additionally, a validation error message is shown to further inform the user about the problem.

This behavior is designed to ensure visibility and interactivity; users can still see the widget and understand that there is something that needs their attention without completely removing the widget from view. The visual cues (like the red border) effectively communicate the validation status while also preserving the context in which the widget is being used. This approach helps maintain an engaging user experience, encouraging users to correct any inputs without disrupting their workflow.

In contrast, other potential options do not align with the expected behavior of the OutSystems platform. For example, a widget that is greyed out would indicate it is disabled and not usable, which is not the case when dealing with validation errors. Furthermore, completely hiding a widget and replacing it with a validation message would adversely affect user experience, as it removes context from the form where the error occurred. Therefore, displaying the widget with appropriate styling and an error message enhances both usability and accessibility in form validation.