Problem with WCF client calling one-way operation

Question

I have run into a problem when calling web service on a SAP PI bus from my WCF client. The operation is defined as one-way, and the method on my proxy operation contract is deco

Answer 1

Check this SAP thread out for the complete discussion: http://scn.sap.com/thread/1627368

@Brian Low has answered this question correctly and very thoroughly (is should get marked as the answer).

I would also like to add that this is a known error in which the SOAP Adapter does not comply with the aforementioned WS-I Basic Profile 1.1 (R2750) and WCF does not comply with (R2750). The result... Hours of wasted time and teeth gnashing....