XI-XML Error: Cannot Produce Target Element /ns0:Messages?

Experts,

Anybody ever seen this error?

Looks like XI is expecting a line of XML that says:

http://sap.com/xi/XI/SplitAndMerge">

<ns0:Message1>

I making this assumption based on a valid test case for this mapping in XI. However, the real SAP outbound file incoming to XI is missing these lines.

Any direction is appreciated.

Thank-You

Are we having fun yet?