Output control and message types

Hi guys,

my problem is this:I have created a new message type for output control for Purchase Order but when I create a new PO and click on 'messages' I expect that the new message type appear as a DEFAULT for example other messages like NEU,etc....

Customizing is OK--> I have parametrized the tr.NACE in all points and also Message Determination Schemas...What can I do?Is there a way to set message types as a DEFAULT for Output control in Purchase Order?

Thanks in advance,10 points for a resolutive answer...

Bye

Maximilian