The documentation reads:
21.4.2. Remote calls within the current conversation scope
In some circumstances it may be required to make a remote call within the scope of the current view's conversation. To do this, you must explicitly set the conversation ID to that of the view before making the remote call. This small snippet of JavaScript will set the conversation ID that is used for remoting calls to the current view's conversation ID:
Seam.Remoting.getContext().setConversationId( #{conversationId} );
Yes, thank you :)