Which of the following options is correct regarding the Valid property of the Form?

The Valid property of the Form is a critical aspect of form validation within OutSystems applications. This property is designed to reflect the overall validity of the Form based on the states of its input fields.

The correct answer indicates that the Valid property should be checked after the last custom validation, which makes sense because it ensures that all validations—including both built-in and custom ones—have been executed before you evaluate the overall validity of the Form. This sequence is vital because it allows you to aggregate the results of all validation checks, ensuring that no invalid states are overlooked before proceeding with any actions that depend on the Form being valid.

Custom validations may implement unique rules that are specific to the application's requirements. Therefore, it's necessary to evaluate the Valid property only after these custom validations have been fully executed to confirm that every aspect of the Form meets the criteria set forth by the developers.

In contrast, other options highlight different aspects of how the Valid property operates but do not convey the importance of checking it after custom validation has been processed. Checking the Valid property at the right point in the validation sequence is crucial for maintaining the integrity of data submission and ensuring users receive accurate feedback on their input.