Oracle SOA/OSB - OSB Kernel:398034]Two operations expect the same incoming message, you must use a selector different than message body

This error can be fixed, by selecting a different "Operation Selection Configuration". This can be done by selecting your proxy-service and select the "Operation" tab sheet in Eclipse Workshop. Here you determine how algorithm of the operations are handled. In our case select 'SOAPAction Header'.
http://orasoa.blogspot.com/2008/11/handle-multiple-operations-in-osb.html