EXEC master.dbo.sp_addlinkedserver @server = N'GEHISTORIAN', @srvproduct=N'', @provider=N'IhOLEDB.iHistorian', @datasrc=N'linkedservername'
EXEC master.dbo.sp_addlinkedsrvlogin @rmtsrvname=N'GEHISTORIAN',@useself=N'False',@locallogin=NULL,@rmtuser=NULL,@rmtpassword=NULL

Msg 7416, Level 16, State 2, Line 2
Access to the remote server is denied because no login-mapping exists.