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Orchestration :The xpath expression selected a node which is not valid for property or distinguished field retrieval

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Error : Orchestration :The xpath expression selected a node which is not valid for property or distinguished field retrieval

Solution:
I got above error while setting message attribute value in orchestration using Xpath:
I was assigning value to response message attribute after the executing Map. the Map was not creating any node for that attribute and when I was trying to set values in orchestration it was throwing error.

1. Check if the transform is producing the node during the runtime. Please also test the field value by writing the map's output to event log
2. Make sure your Xpath is valid. You may use xpath tester tool to test xpath configured is correct. 
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