Is Mandatory property

Note: The check whether the field contains a value is executed when the user leaves the field. When the processing button is clicked, the field is only checked if the standard application calls the check.all.input() function. For screens without other fields to check, this call to check.all.input() can be absent. In that case you must extend the standard command or form command as well to call check.all.input() in the Before Command hook.