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diff --git a/TAO/orbsvcs/orbsvcs/LWFT/StateSynchronizationAgent.idl b/TAO/orbsvcs/orbsvcs/LWFT/StateSynchronizationAgent.idl
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index 00000000000..76a2e61040a
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+++ b/TAO/orbsvcs/orbsvcs/LWFT/StateSynchronizationAgent.idl
@@ -0,0 +1,35 @@
+// -*- IDL -*-
+
+//=============================================================================
+/**
+ *  @file    StateSynchronizationAgent.idl
+ *
+ *  $Id$
+ *
+ *  @author  Friedhelm Wolf (fwolf@dre.vanderbilt.edu)
+ */
+//=============================================================================
+
+#ifndef _STATE_SYNCHRONIZATION_AGENT_IDL_
+#define _STATE_SYNCHRONIZATION_AGENT_IDL_
+
+#include "ReplicatedApplication.idl"
+#include "LWFTDataStructures.idl"
+
+interface StateSynchronizationAgent 
+{
+  /// Triggers an serial update of the state information 
+  /// to all registered replicas.
+  void state_changed (in string object_id);
+
+  /// Used by the ReplicationManager to update information about
+  /// active replicas.
+  void update_rank_list (in RankList replicas);
+
+  /// Informs the replication manager about applications for which
+  /// it is responsible for replication. 
+  void register_application (in string object_id,
+			                       in ReplicatedApplication app);
+};
+
+#endif /* _STATE_SYNCHRONIZATION_AGENT_IDL_ */