How to create a user-defined event error message (Enterprise Manager)

To create a user-defined event error message

1. Right-click the server, click All Tasks, then click Manage SQL Server Messages.
2. In the Manage Server Messages dialog box, click the Messages tab.
3. Click New.
4. In the New SQL Server Message dialog box, in the Severity list, click the severity level.
5. In the Message text box, enter the new event message. The maximum number of characters is 255.
6. Select Always write to Windows NT eventlog to write the event message to the Microsoft® Windows NT® application log.