In System Center Operations Manager 2007 Service Pack 1, the option to filter notifications by category was available in the UI but in the R2 release many changes were made to improve the flexibility of notification subscriptions and the category option was not included. Does that mean you can no longer create notifications filtered by category? In the UI, yes, but it’s possible to include the category filter if you edit the XML itself. To see how visit Steve Rachui’s awesome blog at http://blogs.msdn.com/steverac/archive/2009/09/14/categories-filter-missing-in-opsmgr-r2-notifications.aspx.
J.C. Hornbeck | Manageability Knowledge Engineer