diff --git a/java/com.sap.sailing.server.test/src/com/sap/sailing/server/test/OperationalTransformationTest.java b/java/com.sap.sailing.server.test/src/com/sap/sailing/server/test/OperationalTransformationTest.java
index 608b710cbcb..fb38c03df29 100755
--- a/java/com.sap.sailing.server.test/src/com/sap/sailing/server/test/OperationalTransformationTest.java
+++ b/java/com.sap.sailing.server.test/src/com/sap/sailing/server/test/OperationalTransformationTest.java
@@ -16,12 +16,12 @@ import com.sap.sailing.operationaltransformation.Peer;
 import com.sap.sailing.operationaltransformation.Peer.Role;
 import com.sap.sailing.operationaltransformation.PeerImpl;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 import com.sap.sailing.server.impl.RacingEventServiceImpl;
 import com.sap.sailing.server.operationaltransformation.AddColumnToLeaderboard;
 import com.sap.sailing.server.operationaltransformation.CreateLeaderboard;
 import com.sap.sailing.server.operationaltransformation.MoveLeaderboardColumnUp;
 import com.sap.sailing.server.operationaltransformation.OperationalTransformer;
-import com.sap.sailing.server.operationaltransformation.RacingEventServiceOperation;
 import com.sap.sailing.server.operationaltransformation.RemoveLeaderboard;
 
 public class OperationalTransformationTest {
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/OperationExecutionListener.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/OperationExecutionListener.java
new file mode 100755
index 00000000000..32fe48cba0e
--- /dev/null
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/OperationExecutionListener.java
@@ -0,0 +1,5 @@
+package com.sap.sailing.server;
+
+public interface OperationExecutionListener {
+    <T> void executed(RacingEventServiceOperation<T> operation);
+}
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/RacingEventService.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/RacingEventService.java
index abee5d33f6b..cdb73d948c8 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/RacingEventService.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/RacingEventService.java
@@ -40,7 +40,6 @@ import com.sap.sailing.domain.tractracadapter.DomainFactory;
 import com.sap.sailing.domain.tractracadapter.RaceRecord;
 import com.sap.sailing.domain.tractracadapter.TracTracRaceTracker;
 import com.sap.sailing.expeditionconnector.ExpeditionListener;
-import com.sap.sailing.server.operationaltransformation.RacingEventServiceOperation;
 
 /**
  * An OSGi service that can be used to track boat races using a TracTrac connector that pushes
@@ -339,8 +338,13 @@ public interface RacingEventService extends TrackedEventRegistry, EventFetcher,
     void updateLeaderboardGroup(String oldName, String newName, String description, List<String> leaderboardNames);
     
     /**
-     * Executes an operation whose effects need to be replicated to any replica of this service known.
+     * Executes an operation whose effects need to be replicated to any replica of this service known and
+     * {@link OperationExecutionListener#executed(RacingEventServiceOperation) notifies} all registered
+     * operation execution listeners about the execution of the operation.
      */
     <T> T apply(RacingEventServiceOperation<T> operation);
 
+    void addOperationExecutionListener(OperationExecutionListener listener);
+    
+    void removeOperationExecutionListener(OperationExecutionListener listener);
 }
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RacingEventServiceOperation.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/RacingEventServiceOperation.java
similarity index 81%
rename from java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RacingEventServiceOperation.java
rename to java/com.sap.sailing.server/src/com/sap/sailing/server/RacingEventServiceOperation.java
index 91f46c6096b..78650325156 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RacingEventServiceOperation.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/RacingEventServiceOperation.java
@@ -1,10 +1,16 @@
-package com.sap.sailing.server.operationaltransformation;
+package com.sap.sailing.server;
 
 import java.io.Serializable;
 
 import com.sap.sailing.operationaltransformation.Operation;
 import com.sap.sailing.operationaltransformation.Transformer;
-import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.operationaltransformation.AddColumnToLeaderboard;
+import com.sap.sailing.server.operationaltransformation.CreateLeaderboard;
+import com.sap.sailing.server.operationaltransformation.MoveLeaderboardColumnDown;
+import com.sap.sailing.server.operationaltransformation.MoveLeaderboardColumnUp;
+import com.sap.sailing.server.operationaltransformation.RemoveLeaderboard;
+import com.sap.sailing.server.operationaltransformation.RemoveLeaderboardColumn;
+import com.sap.sailing.server.operationaltransformation.RenameLeaderboardColumn;
 
 public interface RacingEventServiceOperation<ResultType> extends Operation<RacingEventService>, Serializable {
     /**
@@ -13,6 +19,11 @@ public interface RacingEventServiceOperation<ResultType> extends Operation<Racin
      */
     ResultType internalApplyTo(RacingEventService toState) throws Exception;
     
+    /**
+     * Tells if this operation needs to be executed in order with other operations requesting synchronous execution.
+     */
+    boolean requiresSynchronousExecution();
+    
     /**
      * Implements the specific transformation rule for the implementing subclass for the set of possible peer operations
      * along which to transform this operation, assuming this is the client operation. See
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/impl/RacingEventServiceImpl.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/impl/RacingEventServiceImpl.java
index 75690659607..cd0a87cc4a7 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/impl/RacingEventServiceImpl.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/impl/RacingEventServiceImpl.java
@@ -68,8 +68,9 @@ import com.sap.sailing.expeditionconnector.ExpeditionListener;
 import com.sap.sailing.expeditionconnector.ExpeditionWindTrackerFactory;
 import com.sap.sailing.expeditionconnector.UDPExpeditionReceiver;
 import com.sap.sailing.operationaltransformation.Operation;
+import com.sap.sailing.server.OperationExecutionListener;
 import com.sap.sailing.server.RacingEventService;
-import com.sap.sailing.server.operationaltransformation.RacingEventServiceOperation;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class RacingEventServiceImpl implements RacingEventService {
     private static final Logger logger = Logger.getLogger(RacingEventServiceImpl.class.getName());
@@ -119,6 +120,8 @@ public class RacingEventServiceImpl implements RacingEventService {
     private final SwissTimingAdapterPersistence swissTimingAdapterPersistence;
 
     private final Map<Event, DynamicTrackedEvent> eventTrackingCache;
+    
+    private final Set<OperationExecutionListener> operationExecutionListeners;
 
     public RacingEventServiceImpl() {
         tractracDomainFactory = DomainFactory.INSTANCE;
@@ -135,6 +138,7 @@ public class RacingEventServiceImpl implements RacingEventService {
         raceTrackersByID = new HashMap<Object, RaceTracker>();
         leaderboardGroupsByName = new HashMap<String, LeaderboardGroup>();
         leaderboardsByName = new HashMap<String, Leaderboard>();
+        operationExecutionListeners = new HashSet<OperationExecutionListener>();
         // Add one default leaderboard that aggregates all races currently tracked by this service.
         // This is more for debugging purposes than for anything else.
         addLeaderboard(DefaultLeaderboardName.DEFAULT_LEADERBOARD_NAME, new int[] { 5, 8 });
@@ -918,9 +922,24 @@ public class RacingEventServiceImpl implements RacingEventService {
     @Override
     public <T> T apply(RacingEventServiceOperation<T> operation) {
         try {
-            return operation.internalApplyTo(this);
+            T result = operation.internalApplyTo(this);
+            for (OperationExecutionListener listener : operationExecutionListeners) {
+                listener.executed(operation);
+            }
+            return result;
         } catch (Exception e) {
             throw new RuntimeException(e);
         }
     }
+
+    @Override
+    public void addOperationExecutionListener(OperationExecutionListener listener) {
+        operationExecutionListeners.add(listener);
+    }
+
+    @Override
+    public void removeOperationExecutionListener(OperationExecutionListener listener) {
+        operationExecutionListeners.remove(listener);
+    }
+
 }
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/AbstractRacingEventServiceOperation.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/AbstractRacingEventServiceOperation.java
index c4cdd6a0c23..0748145c8e1 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/AbstractRacingEventServiceOperation.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/AbstractRacingEventServiceOperation.java
@@ -1,6 +1,7 @@
 package com.sap.sailing.server.operationaltransformation;
 
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 
 
@@ -14,6 +15,14 @@ import com.sap.sailing.server.RacingEventService;
 public abstract class AbstractRacingEventServiceOperation<ResultType> implements RacingEventServiceOperation<ResultType> {
     private static final long serialVersionUID = 3888231857034991271L;
 
+    /**
+     * This default implementation requests synchronous execution.
+     */
+    @Override
+    public boolean requiresSynchronousExecution() {
+        return true;
+    }
+
     /**
      * Ignores the actual result of {@link #internalApplyTo(RacingEventService)} and returns <code>toState</code> which
      * for the operational transformation algorithm is the "next state reached."
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/AddColumnToLeaderboard.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/AddColumnToLeaderboard.java
index 752a261da93..b65afce6a4a 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/AddColumnToLeaderboard.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/AddColumnToLeaderboard.java
@@ -1,6 +1,7 @@
 package com.sap.sailing.server.operationaltransformation;
 
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 /**
  * Doesn't transform for the {@link RemoveLeaderboardColumn} because only existing leaderboards can be removed,
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/AddEvent.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/AddEvent.java
index e9522de932c..bde8927d725 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/AddEvent.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/AddEvent.java
@@ -1,6 +1,7 @@
 package com.sap.sailing.server.operationaltransformation;
 
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class AddEvent extends AbstractRacingEventServiceOperation<Void> {
     private static final long serialVersionUID = -3550383541066673065L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/AddRaceDefinition.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/AddRaceDefinition.java
index c5de658cfe8..0afd7650099 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/AddRaceDefinition.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/AddRaceDefinition.java
@@ -3,6 +3,7 @@ package com.sap.sailing.server.operationaltransformation;
 import com.sap.sailing.domain.base.RaceDefinition;
 import com.sap.sailing.domain.common.EventIdentifier;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class AddRaceDefinition extends AbstractRacingEventServiceOperation<Void> {
     private static final long serialVersionUID = -2282997511967012426L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/ConnectTrackedRaceToLeaderboardColumn.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/ConnectTrackedRaceToLeaderboardColumn.java
index 6c03dc873c0..effd538c334 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/ConnectTrackedRaceToLeaderboardColumn.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/ConnectTrackedRaceToLeaderboardColumn.java
@@ -5,6 +5,7 @@ import com.sap.sailing.domain.leaderboard.Leaderboard;
 import com.sap.sailing.domain.leaderboard.RaceInLeaderboard;
 import com.sap.sailing.domain.tracking.TrackedRace;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class ConnectTrackedRaceToLeaderboardColumn extends AbstractLeaderboardColumnOperation<Boolean> {
     private static final long serialVersionUID = -1336511401516212508L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/CreateLeaderboard.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/CreateLeaderboard.java
index fd991cee1f0..ed5a4374ade 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/CreateLeaderboard.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/CreateLeaderboard.java
@@ -2,6 +2,7 @@ package com.sap.sailing.server.operationaltransformation;
 
 import com.sap.sailing.domain.leaderboard.Leaderboard;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class CreateLeaderboard extends AbstractLeaderboardOperation<Leaderboard> {
     private static final long serialVersionUID = 891352705068098580L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/CreateLeaderboardGroup.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/CreateLeaderboardGroup.java
index 0b35014ca99..46e8e16cc33 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/CreateLeaderboardGroup.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/CreateLeaderboardGroup.java
@@ -4,6 +4,7 @@ import java.util.List;
 
 import com.sap.sailing.domain.leaderboard.LeaderboardGroup;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class CreateLeaderboardGroup extends AbstractLeaderboardGroupOperation<LeaderboardGroup> {
     private static final long serialVersionUID = -5028997286564650805L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/CreateTrackedRace.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/CreateTrackedRace.java
index ceee6f66398..325dc4de7f8 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/CreateTrackedRace.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/CreateTrackedRace.java
@@ -8,6 +8,7 @@ import com.sap.sailing.domain.tracking.TrackedEvent;
 import com.sap.sailing.domain.tracking.TrackedRace;
 import com.sap.sailing.domain.tracking.impl.EmptyWindStore;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 /**
  * Creates a tracked race for a race identifier by a {@link RaceIdentifier}. The operation assumes that the
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/DisconnectLeaderboardColumnFromTrackedRace.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/DisconnectLeaderboardColumnFromTrackedRace.java
index ab2559e3d25..f5a63410c68 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/DisconnectLeaderboardColumnFromTrackedRace.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/DisconnectLeaderboardColumnFromTrackedRace.java
@@ -3,6 +3,7 @@ package com.sap.sailing.server.operationaltransformation;
 import com.sap.sailing.domain.leaderboard.Leaderboard;
 import com.sap.sailing.domain.leaderboard.RaceInLeaderboard;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class DisconnectLeaderboardColumnFromTrackedRace extends AbstractLeaderboardColumnOperation<Void> {
 
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/MoveLeaderboardColumnDown.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/MoveLeaderboardColumnDown.java
index dc02235b2f2..454a4870ba3 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/MoveLeaderboardColumnDown.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/MoveLeaderboardColumnDown.java
@@ -1,6 +1,7 @@
 package com.sap.sailing.server.operationaltransformation;
 
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class MoveLeaderboardColumnDown extends AbstractLeaderboardColumnOperation<Void> {
     
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/MoveLeaderboardColumnUp.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/MoveLeaderboardColumnUp.java
index 2d1a361cc21..45c2a842a56 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/MoveLeaderboardColumnUp.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/MoveLeaderboardColumnUp.java
@@ -1,6 +1,7 @@
 package com.sap.sailing.server.operationaltransformation;
 
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class MoveLeaderboardColumnUp extends AbstractLeaderboardColumnOperation<Void> {
     
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/OperationalTransformer.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/OperationalTransformer.java
index d2528d35b2f..9fbc518c362 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/OperationalTransformer.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/OperationalTransformer.java
@@ -2,6 +2,7 @@ package com.sap.sailing.server.operationaltransformation;
 
 import com.sap.sailing.operationaltransformation.ClientServerOperationPair;
 import com.sap.sailing.operationaltransformation.Transformer;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class OperationalTransformer implements Transformer<RacingEventServiceOperation<?>> {
 
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RemoveAndUntrackRace.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RemoveAndUntrackRace.java
index b4e719160c5..6c3445882fd 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RemoveAndUntrackRace.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RemoveAndUntrackRace.java
@@ -6,6 +6,7 @@ import com.sap.sailing.domain.base.Event;
 import com.sap.sailing.domain.base.RaceDefinition;
 import com.sap.sailing.domain.common.EventAndRaceIdentifier;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class RemoveAndUntrackRace extends AbstractRaceOperation<Void> {
     private static final long serialVersionUID = 4260421466093529004L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RemoveLeaderboard.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RemoveLeaderboard.java
index 5293b069173..35e44514a44 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RemoveLeaderboard.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RemoveLeaderboard.java
@@ -1,6 +1,7 @@
 package com.sap.sailing.server.operationaltransformation;
 
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class RemoveLeaderboard extends AbstractLeaderboardOperation<Void> {
     private static final long serialVersionUID = -6491003416450255268L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RemoveLeaderboardColumn.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RemoveLeaderboardColumn.java
index 13888606b72..52451f00e7c 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RemoveLeaderboardColumn.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RemoveLeaderboardColumn.java
@@ -1,6 +1,7 @@
 package com.sap.sailing.server.operationaltransformation;
 
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class RemoveLeaderboardColumn extends AbstractLeaderboardColumnOperation<Void> {
     private static final long serialVersionUID = 5425526859417359535L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RemoveLeaderboardGroup.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RemoveLeaderboardGroup.java
index 324026298e6..12a09d919dd 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RemoveLeaderboardGroup.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RemoveLeaderboardGroup.java
@@ -1,6 +1,7 @@
 package com.sap.sailing.server.operationaltransformation;
 
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class RemoveLeaderboardGroup extends AbstractLeaderboardGroupOperation<Void> {
     private static final long serialVersionUID = 3177217793859319236L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RenameLeaderboard.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RenameLeaderboard.java
index 312fd796baa..b57e7dbe714 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RenameLeaderboard.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RenameLeaderboard.java
@@ -1,6 +1,7 @@
 package com.sap.sailing.server.operationaltransformation;
 
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class RenameLeaderboard extends AbstractLeaderboardOperation<Void> {
     private static final long serialVersionUID = 8874599127010526971L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RenameLeaderboardColumn.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RenameLeaderboardColumn.java
index 3719f598114..096ca90c133 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RenameLeaderboardColumn.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RenameLeaderboardColumn.java
@@ -1,6 +1,7 @@
 package com.sap.sailing.server.operationaltransformation;
 
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class RenameLeaderboardColumn extends AbstractLeaderboardColumnOperation<Void> {
     private static final long serialVersionUID = -1238503068559477351L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RenameLeaderboardGroup.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RenameLeaderboardGroup.java
index 2a7a43c7af4..b34d1011680 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RenameLeaderboardGroup.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/RenameLeaderboardGroup.java
@@ -1,6 +1,7 @@
 package com.sap.sailing.server.operationaltransformation;
 
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class RenameLeaderboardGroup extends AbstractLeaderboardGroupOperation<Void> {
     private static final long serialVersionUID = -5007784579411727148L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/SetRaceIsKnownToStartUpwind.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/SetRaceIsKnownToStartUpwind.java
index 5a6ef722fd2..1d03a2c15cb 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/SetRaceIsKnownToStartUpwind.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/SetRaceIsKnownToStartUpwind.java
@@ -3,6 +3,7 @@ package com.sap.sailing.server.operationaltransformation;
 import com.sap.sailing.domain.common.EventAndRaceIdentifier;
 import com.sap.sailing.domain.tracking.DynamicTrackedRace;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class SetRaceIsKnownToStartUpwind extends AbstractRaceOperation<Void> {
     private static final long serialVersionUID = 272403191741207144L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/SetWindSourcesToExclude.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/SetWindSourcesToExclude.java
index 468ac5d2677..e193a47dbc5 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/SetWindSourcesToExclude.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/SetWindSourcesToExclude.java
@@ -4,6 +4,7 @@ import com.sap.sailing.domain.common.EventAndRaceIdentifier;
 import com.sap.sailing.domain.common.WindSource;
 import com.sap.sailing.domain.tracking.DynamicTrackedRace;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class SetWindSourcesToExclude extends AbstractRaceOperation<Void> {
     private static final long serialVersionUID = 7639288885720509529L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/StopTrackingEvent.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/StopTrackingEvent.java
index 9279abfbb72..367521d0bdc 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/StopTrackingEvent.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/StopTrackingEvent.java
@@ -6,6 +6,7 @@ import java.net.MalformedURLException;
 import com.sap.sailing.domain.base.Event;
 import com.sap.sailing.domain.common.EventIdentifier;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class StopTrackingEvent extends AbstractRacingEventServiceOperation<Void> {
     private static final long serialVersionUID = -651066062098923320L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/StopTrackingRace.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/StopTrackingRace.java
index 7c661d0690e..e00a1f5ead3 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/StopTrackingRace.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/StopTrackingRace.java
@@ -4,6 +4,7 @@ import com.sap.sailing.domain.base.Event;
 import com.sap.sailing.domain.base.RaceDefinition;
 import com.sap.sailing.domain.common.EventAndRaceIdentifier;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class StopTrackingRace extends AbstractRaceOperation<Void> {
     private static final long serialVersionUID = -6074168525544219596L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/TrackEvent.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/TrackEvent.java
index b3aa461800c..8e43b88bf09 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/TrackEvent.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/TrackEvent.java
@@ -4,6 +4,7 @@ import com.sap.sailing.domain.base.Event;
 import com.sap.sailing.domain.common.EventIdentifier;
 import com.sap.sailing.domain.tracking.DynamicTrackedEvent;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class TrackEvent extends AbstractRacingEventServiceOperation<DynamicTrackedEvent> {
     private static final long serialVersionUID = 7891960455598410633L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateCompetitorDisplayNameInLeaderboard.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateCompetitorDisplayNameInLeaderboard.java
index 07364b8f652..b6244057750 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateCompetitorDisplayNameInLeaderboard.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateCompetitorDisplayNameInLeaderboard.java
@@ -3,6 +3,7 @@ package com.sap.sailing.server.operationaltransformation;
 import com.sap.sailing.domain.base.Competitor;
 import com.sap.sailing.domain.leaderboard.Leaderboard;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class UpdateCompetitorDisplayNameInLeaderboard extends AbstractLeaderboardOperation<Void> {
     private static final long serialVersionUID = 366335484317671148L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateIsMedalRace.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateIsMedalRace.java
index f6d44198090..85d33cfdbc4 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateIsMedalRace.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateIsMedalRace.java
@@ -2,6 +2,7 @@ package com.sap.sailing.server.operationaltransformation;
 
 import com.sap.sailing.domain.leaderboard.Leaderboard;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class UpdateIsMedalRace extends AbstractLeaderboardColumnOperation<Void> {
     private static final long serialVersionUID = 5925081961634860757L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboard.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboard.java
index d1a8c37fc22..e488dbfb0fd 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboard.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboard.java
@@ -5,6 +5,7 @@ import java.util.Arrays;
 import com.sap.sailing.domain.leaderboard.Leaderboard;
 import com.sap.sailing.domain.leaderboard.impl.ResultDiscardingRuleImpl;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class UpdateLeaderboard extends AbstractLeaderboardOperation<Void> {
     private static final long serialVersionUID = -8040361040050151768L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboardCarryValue.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboardCarryValue.java
index bf6b10c436a..27aae9690c7 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboardCarryValue.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboardCarryValue.java
@@ -3,6 +3,7 @@ package com.sap.sailing.server.operationaltransformation;
 import com.sap.sailing.domain.base.Competitor;
 import com.sap.sailing.domain.leaderboard.Leaderboard;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class UpdateLeaderboardCarryValue extends AbstractLeaderboardOperation<Void> {
     private static final long serialVersionUID = 5467731814788887426L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboardGroup.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboardGroup.java
index 7ad49e33bee..b642796f21c 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboardGroup.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboardGroup.java
@@ -3,6 +3,7 @@ package com.sap.sailing.server.operationaltransformation;
 import java.util.List;
 
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class UpdateLeaderboardGroup extends AbstractLeaderboardGroupOperation<Void> {
     private static final long serialVersionUID = -1822477339916802467L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboardMaxPointsReason.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboardMaxPointsReason.java
index 7c7fea007f0..69fa1cc4341 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboardMaxPointsReason.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboardMaxPointsReason.java
@@ -12,6 +12,7 @@ import com.sap.sailing.domain.leaderboard.Leaderboard;
 import com.sap.sailing.domain.leaderboard.Leaderboard.Entry;
 import com.sap.sailing.domain.leaderboard.RaceInLeaderboard;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class UpdateLeaderboardMaxPointsReason extends AbstractLeaderboardColumnOperation<Pair<Integer, Integer>> {
     private static final long serialVersionUID = -492130952256848047L;
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboardScoreCorrection.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboardScoreCorrection.java
index a3e1a5b7526..7887a927703 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboardScoreCorrection.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/operationaltransformation/UpdateLeaderboardScoreCorrection.java
@@ -9,6 +9,7 @@ import com.sap.sailing.domain.common.impl.Util.Pair;
 import com.sap.sailing.domain.leaderboard.Leaderboard;
 import com.sap.sailing.domain.leaderboard.RaceInLeaderboard;
 import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.RacingEventServiceOperation;
 
 public class UpdateLeaderboardScoreCorrection extends AbstractLeaderboardColumnOperation<Pair<Integer, Integer>> {
     private static final long serialVersionUID = -977025759476022993L;