<subflow-activity id="1">
...
<output-mappings>
<mapping>
<source-attribute wdo-name="SubflowCaseWDO"
name="participantName" />
<target-attribute wdo-name="CaseWDO"
name="participantName" />
</mapping>
<mapping>
<source-attribute wdo-name="SubflowChildDetailsList"
name="identifier" />
<target-attribute wdo-name="ChildDetailsList"
name="identifier" />
</mapping>
</output-mappings>
...
</subflow-activity>