What validations does OutSystems perform by default when the Built-in Validations property of a Form is set to Yes?

When the Built-in Validations property of a Form in OutSystems is set to Yes, the platform automatically performs certain validations on user input to ensure data integrity. One of the key functions of these built-in validations is to check mandatory fields, ensuring that all required input is provided before the form can be submitted. This is critical for maintaining the rules of data entry where certain fields must be populated for a transaction or entry to be valid.

In addition to checking for mandatory fields, the platform also verifies that the data type of the user input matches the expected type defined for those fields. For example, if a field is expected to be an integer, OutSystems will check that the input provided is indeed an integer and will raise an error if it is not. This dual focus on both mandatory status and type matching helps prevent errors that could arise from improper data being captured in the system, thus ensuring that the data adheres to the defined schema and business rules.

This built-in functionality facilitates a smoother user experience and reduces the need for extensive custom validation logic, allowing developers to focus on other aspects of their application's functionality and usability.