Thanks for the response Amit.  I came back to this and now it is working and I'm not sure what changed.

Through the forum, I've been able to formulate working ExecuteQuery examples in SOAP U/I.  However, when trying to get the same to work in c#, it isn't clear to me how to get the response data.Here's a snippet of my code:XmlElement response = null;            try            {                XmlEleme...