The following steps show you how to add a message mapping output
(target).
From the Navigator view, double-click the mapping file with which
you want to work. The Mapping view appears.
In the resulting Target view, right-click the white space and click Add Message Mapping Output.
From the left view in the Add Message Schemas window, select the
message schema (.mxsd)
that you want to use for your output message.
From the right view, select the output message that you want to
use.
If the message is from a project that has not been referenced previously,
click Next and proceed
to Step 6; otherwise click Finish.
If you click Next,
the Add Project Reference view is displayed. Confirm the project reference
by selecting the check box and click Finish. The message structure now appears in the Message Target mapping
view.