A MarshalException is thrown if a java.io.IOException occurs while marshalling the remote call header, arguments or return value for a remote method call. A MarshalException is also thrown if the receiver does not support the protocol version of the sender.

If a MarshalException occurs during a remote method call, the call may or may not have reached the server. If the call did reach the server, parameters may have been deserialized. A call may not be retransmitted after a MarshalException and reliably preserve "at most once" call semantics.