Hi Peter,
My testing tool is SOAP UI 5.0.0..The data "Cause Comment" is correct and the value "String4" also correct..Actually the parameter <ItRfcret> is for message output..initially you have to pass some data..For this reason I have passed those parameter..So data are correct..
At last.Yes,I am trying to communicate with server QE1/300.I have transported my RFC in server QE1/300..And also created logical port in server QE1/300.