You can configure your own mapping of messages in the different classes. For that purpose you can use one of the buttons located on the right hand of the dialog box. Each button refers to a message class. To change the class associated with a message, you have to select the message in the list box and then click the button associated with the class where you want to move the message:
If you want to validate the modification you have performed in the error message mapping, close the Message Settings dialog box using the OK button. If you close it using the Cancel button, the previous message mapping remains valid.