Remote Procedure Invocation (50) can be used to send the data, but then the caller is also telling the receiver—via the procedure being invoked—what to do with the data. Likewise, a Command Message (145) would transfer the data but would be overly specific about what the receiver should do with the data. Also, Remote Procedure Invocation (50) assumes two-way communication, which is unnecessary if we only want to pass data from one application to another.
