Route tracing works with any kind of message structure. The Fuse Message wizard creates an XML message specifying the requsite XML encoding, but leaves structuring the message up to you.
To create a test message:
In Project Explorer, right-click the project to open the context menu.
Select > to open the Fuse Message File wizard.
In the RouteContainer field, enter the path of the folder in which you want to store the message.
Use the button to help locate the proper folder.
In the File name field, enter a name for the message.
Click .
The new message opens in the XML editor.
Fill in the contents (body and header text) of the message.
On the menu bar, click > to save the test message.