Configures whether if all validation messages should be displayed at the same time or not.
|One at a Time
||Displays always the last Validation message that is triggered by the application. This is the default value.
|All at Once
||Every validation message that should be on the screen, is shown at the same time if the validation clause is triggered.
Languages: .Net, Ruby(up to and including GeneXus X Evolution 3), Java.