Trans Union reports are usually printed by local affiliates from a mainframe running a database program called HAWK. Creditors who are online with Trans Union access credit information through HAWK as well. The HAWK-ALERT feature is one that picks up on conflicting information that might indicate fraud. This could include a social security number that doesn't exist or that of a deceased person. Unfortunately, it doesn't pick up on CRA F--k ups.
The message you received is the most common message. It simply means that "none of the processed HAWK searches generated an indication of potential fraud." Therefore, you're OK. :-)