Index: Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Data/DuneLocation.cs
===================================================================
diff -u -r510415935cbdf34b1c927c7cd87d4aff20dcf728 -rd8b53e2a5786750a23b5baa81e6adf1e035df5c8
--- Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Data/DuneLocation.cs	(.../DuneLocation.cs)	(revision 510415935cbdf34b1c927c7cd87d4aff20dcf728)
+++ Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Data/DuneLocation.cs	(.../DuneLocation.cs)	(revision d8b53e2a5786750a23b5baa81e6adf1e035df5c8)
@@ -33,6 +33,7 @@
         /// <summary>
         /// Creates a new instance of <see cref="DuneLocation"/>.
         /// </summary>
+        /// <param name="id">Id of the <see cref="DuneLocation"/>.</param>
         /// <param name="name">Name of the <see cref="DuneLocation"/>.</param>
         /// <param name="coordinateX">X-coordinate of the <see cref="DuneLocation"/>.</param>
         /// <param name="coordinateY">Y-coordinate of the <see cref="DuneLocation"/>.</param>
@@ -41,13 +42,14 @@
         /// <param name="orientation">Orientation of the <see cref="DuneLocation"/>.</param>
         /// <param name="d50">D50 of the <see cref="DuneLocation"/>.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="name"/> is <c>null</c>.</exception>
-        public DuneLocation(string name, double coordinateX, double coordinateY, int coastalAreaId, double offset, double orientation, double d50)
+        public DuneLocation(long id, string name, double coordinateX, double coordinateY, int coastalAreaId, double offset, double orientation, double d50)
         {
             if (name == null)
             {
                 throw new ArgumentNullException("name");
             }
 
+            Id = id;
             Name = name;
             Location = new Point2D(coordinateX, coordinateY);
             CoastalAreaId = coastalAreaId;
@@ -57,6 +59,11 @@
         }
 
         /// <summary>
+        /// Gets the database id of the dune location.
+        /// </summary>
+        public long Id { get; private set; }
+
+        /// <summary>
         /// Gets the name of the dune location.
         /// </summary>
         public string Name { get; private set; }
Index: Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Service/DuneErosionDataSynchronizationService.cs
===================================================================
diff -u -r9717724b58f9be090380d74ba4d30c74ba81eb0c -rd8b53e2a5786750a23b5baa81e6adf1e035df5c8
--- Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Service/DuneErosionDataSynchronizationService.cs	(.../DuneErosionDataSynchronizationService.cs)	(revision 9717724b58f9be090380d74ba4d30c74ba81eb0c)
+++ Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Service/DuneErosionDataSynchronizationService.cs	(.../DuneErosionDataSynchronizationService.cs)	(revision d8b53e2a5786750a23b5baa81e6adf1e035df5c8)
@@ -59,16 +59,20 @@
 
             foreach (ReadDuneLocation duneLocation in duneLocations)
             {
-                if (hydraulicBoundaryDatabase.Locations.Any(hydraulicBoundaryLocation =>
-                                                                    Math2D.AreEqualPoints(hydraulicBoundaryLocation.Location, duneLocation.Location)))
+                foreach (var hydraulicBoundaryLocation in hydraulicBoundaryDatabase.Locations)
                 {
-                    failureMechanism.DuneLocations.Add(new DuneLocation(duneLocation.Name,
-                                                                        duneLocation.Location.X,
-                                                                        duneLocation.Location.Y,
-                                                                        duneLocation.CoastalAreaId,
-                                                                        duneLocation.Offset,
-                                                                        duneLocation.Orientation,
-                                                                        duneLocation.D50));
+                    if (Math2D.AreEqualPoints(hydraulicBoundaryLocation.Location, duneLocation.Location))
+                    {
+                        failureMechanism.DuneLocations.Add(new DuneLocation(hydraulicBoundaryLocation.Id,
+                                                                            duneLocation.Name,
+                                                                            duneLocation.Location.X,
+                                                                            duneLocation.Location.Y,
+                                                                            duneLocation.CoastalAreaId,
+                                                                            duneLocation.Offset,
+                                                                            duneLocation.Orientation,
+                                                                            duneLocation.D50));
+                        break;
+                    }
                 }
             }
         }
Index: Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Data.Test/DuneLocationTest.cs
===================================================================
diff -u -r510415935cbdf34b1c927c7cd87d4aff20dcf728 -rd8b53e2a5786750a23b5baa81e6adf1e035df5c8
--- Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Data.Test/DuneLocationTest.cs	(.../DuneLocationTest.cs)	(revision 510415935cbdf34b1c927c7cd87d4aff20dcf728)
+++ Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Data.Test/DuneLocationTest.cs	(.../DuneLocationTest.cs)	(revision d8b53e2a5786750a23b5baa81e6adf1e035df5c8)
@@ -32,7 +32,7 @@
         public void Constructor_NameNull_ThrowArgumentNullException()
         {
             // Call
-            TestDelegate test = () => new DuneLocation(null, 0.0, 0.0, 0, 0.0, 0.0, 0.0);
+            TestDelegate test = () => new DuneLocation(0, null, 0.0, 0.0, 0, 0.0, 0.0, 0.0);
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(test);
@@ -43,6 +43,7 @@
         public void Constructor_ExpectedValues()
         {
             // Setup
+            const long id = 0;
             const string name = "Dune location";
             const double coordinateX = 10.0;
             const double coordinateY = 12.0;
@@ -52,9 +53,10 @@
             const double d50 = 0.123456;
 
             // Call
-            var duneLocation = new DuneLocation(name, coordinateX, coordinateY, coastalAreaId, offset, orientation, d50);
+            var duneLocation = new DuneLocation(id, name, coordinateX, coordinateY, coastalAreaId, offset, orientation, d50);
 
             // Assert
+            Assert.AreEqual(id, duneLocation.Id);
             Assert.AreEqual(name, duneLocation.Name);
             Assert.AreEqual(coordinateX, duneLocation.Location.X);
             Assert.AreEqual(coordinateY, duneLocation.Location.Y);
@@ -68,7 +70,7 @@
         public void Constructor_WithOffset_OffsetRounded()
         {
             // Call
-            var duneLocation = new DuneLocation("dune", 0.0, 0.0, 0, 4.298, 0.0, 0.0);
+            var duneLocation = new DuneLocation(0, "dune", 0.0, 0.0, 0, 4.298, 0.0, 0.0);
 
             // Assert
             Assert.AreEqual(2, duneLocation.Offset.NumberOfDecimalPlaces);
@@ -79,7 +81,7 @@
         public void Constructor_WithOrientation_OrientationRounded()
         {
             // Call
-            var duneLocation = new DuneLocation("dune", 0.0, 0.0, 0, 0.0, 8.214, 0.0);
+            var duneLocation = new DuneLocation(0, "dune", 0.0, 0.0, 0, 0.0, 8.214, 0.0);
 
             // Assert
             Assert.AreEqual(1, duneLocation.Orientation.NumberOfDecimalPlaces);
@@ -90,7 +92,7 @@
         public void Constructor_WithD50_D50Rounded()
         {
             // Call
-            var duneLocation = new DuneLocation("dune", 0.0, 0.0, 0, 0.0, 0.0, 0.1234567);
+            var duneLocation = new DuneLocation(0, "dune", 0.0, 0.0, 0, 0.0, 0.0, 0.1234567);
 
             // Assert
             Assert.AreEqual(6, duneLocation.D50.NumberOfDecimalPlaces);
Index: Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Data.TestUtil/TestDuneLocation.cs
===================================================================
diff -u -rb887e0d83a9ce38d959cc7d3ebbb4407a6bec416 -rd8b53e2a5786750a23b5baa81e6adf1e035df5c8
--- Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Data.TestUtil/TestDuneLocation.cs	(.../TestDuneLocation.cs)	(revision b887e0d83a9ce38d959cc7d3ebbb4407a6bec416)
+++ Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Data.TestUtil/TestDuneLocation.cs	(.../TestDuneLocation.cs)	(revision d8b53e2a5786750a23b5baa81e6adf1e035df5c8)
@@ -31,6 +31,6 @@
         /// Creates a new instance of <see cref="TestDuneLocation"/>.
         /// </summary>
         public TestDuneLocation() 
-            : base(string.Empty, 0, 0, 0, 0, 0, 0) {}
+            : base(0, string.Empty, 0, 0, 0, 0, 0, 0) {}
     }
 }
Index: Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Service.Test/DuneErosionDataSynchronizationServiceTest.cs
===================================================================
diff -u -r9717724b58f9be090380d74ba4d30c74ba81eb0c -rd8b53e2a5786750a23b5baa81e6adf1e035df5c8
--- Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Service.Test/DuneErosionDataSynchronizationServiceTest.cs	(.../DuneErosionDataSynchronizationServiceTest.cs)	(revision 9717724b58f9be090380d74ba4d30c74ba81eb0c)
+++ Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Service.Test/DuneErosionDataSynchronizationServiceTest.cs	(.../DuneErosionDataSynchronizationServiceTest.cs)	(revision d8b53e2a5786750a23b5baa81e6adf1e035df5c8)
@@ -87,6 +87,7 @@
             Assert.AreEqual(1, failureMechanism.DuneLocations.Count);
 
             DuneLocation duneLocation = failureMechanism.DuneLocations.First();
+            Assert.AreEqual(hydraulicBoundaryLocation.Id, duneLocation.Id);
             Assert.AreEqual(readDuneLocation.Name, duneLocation.Name);
             Assert.AreEqual(readDuneLocation.Location, duneLocation.Location);
             Assert.AreEqual(readDuneLocation.Offset, duneLocation.Offset);