Index: Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.TestUtil.Test/ClosingStructurePermutationHelperTest.cs
===================================================================
diff -u -r5e1e129f9a4e57a1255b5b1a70a34df434434327 -rad440d0e14ea249a0ae198e634ab6aa5d72a3977
--- Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.TestUtil.Test/ClosingStructurePermutationHelperTest.cs	(.../ClosingStructurePermutationHelperTest.cs)	(revision 5e1e129f9a4e57a1255b5b1a70a34df434434327)
+++ Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.TestUtil.Test/ClosingStructurePermutationHelperTest.cs	(.../ClosingStructurePermutationHelperTest.cs)	(revision ad440d0e14ea249a0ae198e634ab6aa5d72a3977)
@@ -51,7 +51,7 @@
                 .OfType<ClosingStructure>()
                 .ToList();
             Assert.AreEqual(17, structures.Count());
-            Assert.IsTrue(structures.All(s => s.Id == structures.First().Id));
+            Assert.IsTrue(structures.All(s => s.Id == referenceStructure.Id));
             differentStructures.Add(structures.Single(s => !s.Name.Equals(referenceStructure.Name)));
             differentStructures.Add(structures.Single(s => !s.Location.Equals(referenceStructure.Location)));
             differentStructures.Add(structures.Single(s => !s.AllowedLevelIncreaseStorage.Equals(referenceStructure.AllowedLevelIncreaseStorage)));
Index: Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.TestUtil.Test/HeightStructurePermutationHelperTest.cs
===================================================================
diff -u -r6077633f3df6394b0af989aaa1d252773fdff297 -rad440d0e14ea249a0ae198e634ab6aa5d72a3977
--- Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.TestUtil.Test/HeightStructurePermutationHelperTest.cs	(.../HeightStructurePermutationHelperTest.cs)	(revision 6077633f3df6394b0af989aaa1d252773fdff297)
+++ Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.TestUtil.Test/HeightStructurePermutationHelperTest.cs	(.../HeightStructurePermutationHelperTest.cs)	(revision ad440d0e14ea249a0ae198e634ab6aa5d72a3977)
@@ -51,7 +51,7 @@
                 .OfType<HeightStructure>()
                 .ToList();
             Assert.AreEqual(10, structures.Count());
-            Assert.IsTrue(structures.All(s => s.Id == structures.First().Id));
+            Assert.IsTrue(structures.All(s => s.Id == referenceStructure.Id));
             differentStructures.Add(structures.Single(s => !s.Name.Equals(referenceStructure.Name)));
             differentStructures.Add(structures.Single(s => !s.Location.Equals(referenceStructure.Location)));
             differentStructures.Add(structures.Single(s => !s.AllowedLevelIncreaseStorage.Equals(referenceStructure.AllowedLevelIncreaseStorage)));
Index: Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.TestUtil.Test/Ringtoets.StabilityPointStructures.Data.TestUtil.Test.csproj
===================================================================
diff -u -r37453954b2d36699ea16375cdfbf89785a094ab9 -rad440d0e14ea249a0ae198e634ab6aa5d72a3977
--- Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.TestUtil.Test/Ringtoets.StabilityPointStructures.Data.TestUtil.Test.csproj	(.../Ringtoets.StabilityPointStructures.Data.TestUtil.Test.csproj)	(revision 37453954b2d36699ea16375cdfbf89785a094ab9)
+++ Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.TestUtil.Test/Ringtoets.StabilityPointStructures.Data.TestUtil.Test.csproj	(.../Ringtoets.StabilityPointStructures.Data.TestUtil.Test.csproj)	(revision ad440d0e14ea249a0ae198e634ab6aa5d72a3977)
@@ -50,6 +50,7 @@
       <Link>Properties\GlobalAssembly.cs</Link>
     </Compile>
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="StabilityPointStructurePermutationHelperTest.cs" />
     <Compile Include="TestStabilityPointStructuresCalculationTest.cs" />
     <Compile Include="TestStabilityPointStructuresFailureMechanismTest.cs" />
     <Compile Include="TestStabilityPointStructureTest.cs" />
Index: Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.TestUtil.Test/StabilityPointStructurePermutationHelperTest.cs
===================================================================
diff -u
--- Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.TestUtil.Test/StabilityPointStructurePermutationHelperTest.cs	(revision 0)
+++ Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.TestUtil.Test/StabilityPointStructurePermutationHelperTest.cs	(revision ad440d0e14ea249a0ae198e634ab6aa5d72a3977)
@@ -0,0 +1,139 @@
+// Copyright (C) Stichting Deltares 2017. All rights reserved.
+//
+// This file is part of Ringtoets.
+//
+// Ringtoets is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System.Collections.Generic;
+using System.Linq;
+using NUnit.Framework;
+
+namespace Ringtoets.StabilityPointStructures.Data.TestUtil.Test
+{
+    [TestFixture]
+    public class StabilityPointStructurePermutationHelperTest
+    {
+        [Test]
+        public void DifferentStabilityPointStructureWithSameId_ReturnsExpectedTestCaseData()
+        {
+            // Setup
+            var referenceStructure = new TestStabilityPointStructure();
+            var differentStructures = new List<StabilityPointStructure>();
+
+            // Call
+            List<TestCaseData> testCaseDatas = StabilityPointStructurePermutationHelper.DifferentStabilityPointStructuresWithSameId("A", "B").ToList();
+
+            // Assert
+            Assert.AreEqual(27, testCaseDatas.Count);
+            IEnumerable<string> testNames = testCaseDatas
+                .Select(tcd => tcd.TestName)
+                .ToList();
+            Assert.AreEqual(27, testNames.Distinct().Count());
+            Assert.IsTrue(testNames.All(tn => tn.StartsWith("A_")));
+            Assert.IsTrue(testNames.All(tn => tn.EndsWith("_B")));
+            IEnumerable<StabilityPointStructure> structures = testCaseDatas
+                .Select(tcd => tcd.Arguments[0])
+                .OfType<StabilityPointStructure>()
+                .ToList();
+            Assert.AreEqual(27, structures.Count());
+            Assert.IsTrue(structures.All(s => s.Id == referenceStructure.Id));
+            differentStructures.Add(structures.Single(s => !s.Name.Equals(referenceStructure.Name)));
+            differentStructures.Add(structures.Single(s => !s.Location.Equals(referenceStructure.Location)));
+            differentStructures.Add(structures.Single(s => !s.StorageStructureArea.Equals(referenceStructure.StorageStructureArea)));
+            differentStructures.Add(structures.Single(s => !s.AllowedLevelIncreaseStorage.Equals(referenceStructure.AllowedLevelIncreaseStorage)));
+            differentStructures.Add(structures.Single(s => !s.WidthFlowApertures.Equals(referenceStructure.WidthFlowApertures)));
+            differentStructures.Add(structures.Single(s => !s.InsideWaterLevel.Equals(referenceStructure.InsideWaterLevel)));
+            differentStructures.Add(structures.Single(s => !s.ThresholdHeightOpenWeir.Equals(referenceStructure.ThresholdHeightOpenWeir)));
+            differentStructures.Add(structures.Single(s => !s.CriticalOvertoppingDischarge.Equals(referenceStructure.CriticalOvertoppingDischarge)));
+            differentStructures.Add(structures.Single(s => !s.FlowWidthAtBottomProtection.Equals(referenceStructure.FlowWidthAtBottomProtection)));
+            differentStructures.Add(structures.Single(s => !s.ConstructiveStrengthLinearLoadModel.Equals(referenceStructure.ConstructiveStrengthLinearLoadModel)));
+            differentStructures.Add(structures.Single(s => !s.ConstructiveStrengthQuadraticLoadModel.Equals(referenceStructure.ConstructiveStrengthQuadraticLoadModel)));
+            differentStructures.Add(structures.Single(s => !s.BankWidth.Equals(referenceStructure.BankWidth)));
+            differentStructures.Add(structures.Single(s => !s.InsideWaterLevelFailureConstruction.Equals(referenceStructure.InsideWaterLevelFailureConstruction)));
+            differentStructures.Add(structures.Single(s => !s.EvaluationLevel.Equals(referenceStructure.EvaluationLevel)));
+            differentStructures.Add(structures.Single(s => !s.LevelCrestStructure.Equals(referenceStructure.LevelCrestStructure)));
+            differentStructures.Add(structures.Single(s => !s.VerticalDistance.Equals(referenceStructure.VerticalDistance)));
+            differentStructures.Add(structures.Single(s => !s.FailureProbabilityRepairClosure.Equals(referenceStructure.FailureProbabilityRepairClosure)));
+            differentStructures.Add(structures.Single(s => !s.FailureCollisionEnergy.Equals(referenceStructure.FailureCollisionEnergy)));
+            differentStructures.Add(structures.Single(s => !s.ShipMass.Equals(referenceStructure.ShipMass)));
+            differentStructures.Add(structures.Single(s => !s.ShipVelocity.Equals(referenceStructure.ShipVelocity)));
+            differentStructures.Add(structures.Single(s => !s.LevellingCount.Equals(referenceStructure.LevellingCount)));
+            differentStructures.Add(structures.Single(s => !s.ProbabilityCollisionSecondaryStructure.Equals(referenceStructure.ProbabilityCollisionSecondaryStructure)));
+            differentStructures.Add(structures.Single(s => !s.FlowVelocityStructureClosable.Equals(referenceStructure.FlowVelocityStructureClosable)));
+            differentStructures.Add(structures.Single(s => !s.StabilityLinearLoadModel.Equals(referenceStructure.StabilityLinearLoadModel)));
+            differentStructures.Add(structures.Single(s => !s.StabilityQuadraticLoadModel.Equals(referenceStructure.StabilityQuadraticLoadModel)));
+            differentStructures.Add(structures.Single(s => !s.AreaFlowApertures.Equals(referenceStructure.AreaFlowApertures)));
+            differentStructures.Add(structures.Single(s => !s.InflowModelType.Equals(referenceStructure.InflowModelType)));
+            Assert.AreEqual(27, differentStructures.Count);
+        }
+
+        [Test]
+        public void DifferentStabilityPointStructuresWithSameIdNameAndLocation_ReturnsExpectedTestCaseData()
+        {
+            // Setup
+            var referenceStructure = new TestStabilityPointStructure();
+            var differentStructures = new List<StabilityPointStructure>();
+
+            // Call
+            List<TestCaseData> testCaseDatas = StabilityPointStructurePermutationHelper.DifferentStabilityPointStructuresWithSameIdNameAndLocation("C", "D").ToList();
+
+            // Assert
+            Assert.AreEqual(25, testCaseDatas.Count);
+            IEnumerable<string> testNames = testCaseDatas
+                .Select(tcd => tcd.TestName)
+                .ToList();
+            Assert.AreEqual(25, testNames.Distinct().Count());
+            Assert.IsTrue(testNames.All(tn => tn.StartsWith("C_")));
+            Assert.IsTrue(testNames.All(tn => tn.EndsWith("_D")));
+            IEnumerable<StabilityPointStructure> structures = testCaseDatas
+                .Select(tcd => tcd.Arguments[0])
+                .OfType<StabilityPointStructure>()
+                .ToList();
+            Assert.AreEqual(25, structures.Count());
+            Assert.IsTrue(structures.All(s => s.Id == referenceStructure.Id));
+            Assert.IsTrue(structures.All(s => s.Name == referenceStructure.Name));
+            Assert.IsTrue(structures.All(s => s.Location.Equals(referenceStructure.Location)));
+            differentStructures.Add(structures.Single(s => !s.StorageStructureArea.Equals(referenceStructure.StorageStructureArea)));
+            differentStructures.Add(structures.Single(s => !s.AllowedLevelIncreaseStorage.Equals(referenceStructure.AllowedLevelIncreaseStorage)));
+            differentStructures.Add(structures.Single(s => !s.WidthFlowApertures.Equals(referenceStructure.WidthFlowApertures)));
+            differentStructures.Add(structures.Single(s => !s.InsideWaterLevel.Equals(referenceStructure.InsideWaterLevel)));
+            differentStructures.Add(structures.Single(s => !s.ThresholdHeightOpenWeir.Equals(referenceStructure.ThresholdHeightOpenWeir)));
+            differentStructures.Add(structures.Single(s => !s.CriticalOvertoppingDischarge.Equals(referenceStructure.CriticalOvertoppingDischarge)));
+            differentStructures.Add(structures.Single(s => !s.FlowWidthAtBottomProtection.Equals(referenceStructure.FlowWidthAtBottomProtection)));
+            differentStructures.Add(structures.Single(s => !s.ConstructiveStrengthLinearLoadModel.Equals(referenceStructure.ConstructiveStrengthLinearLoadModel)));
+            differentStructures.Add(structures.Single(s => !s.ConstructiveStrengthQuadraticLoadModel.Equals(referenceStructure.ConstructiveStrengthQuadraticLoadModel)));
+            differentStructures.Add(structures.Single(s => !s.BankWidth.Equals(referenceStructure.BankWidth)));
+            differentStructures.Add(structures.Single(s => !s.InsideWaterLevelFailureConstruction.Equals(referenceStructure.InsideWaterLevelFailureConstruction)));
+            differentStructures.Add(structures.Single(s => !s.EvaluationLevel.Equals(referenceStructure.EvaluationLevel)));
+            differentStructures.Add(structures.Single(s => !s.LevelCrestStructure.Equals(referenceStructure.LevelCrestStructure)));
+            differentStructures.Add(structures.Single(s => !s.VerticalDistance.Equals(referenceStructure.VerticalDistance)));
+            differentStructures.Add(structures.Single(s => !s.FailureProbabilityRepairClosure.Equals(referenceStructure.FailureProbabilityRepairClosure)));
+            differentStructures.Add(structures.Single(s => !s.FailureCollisionEnergy.Equals(referenceStructure.FailureCollisionEnergy)));
+            differentStructures.Add(structures.Single(s => !s.ShipMass.Equals(referenceStructure.ShipMass)));
+            differentStructures.Add(structures.Single(s => !s.ShipVelocity.Equals(referenceStructure.ShipVelocity)));
+            differentStructures.Add(structures.Single(s => !s.LevellingCount.Equals(referenceStructure.LevellingCount)));
+            differentStructures.Add(structures.Single(s => !s.ProbabilityCollisionSecondaryStructure.Equals(referenceStructure.ProbabilityCollisionSecondaryStructure)));
+            differentStructures.Add(structures.Single(s => !s.FlowVelocityStructureClosable.Equals(referenceStructure.FlowVelocityStructureClosable)));
+            differentStructures.Add(structures.Single(s => !s.StabilityLinearLoadModel.Equals(referenceStructure.StabilityLinearLoadModel)));
+            differentStructures.Add(structures.Single(s => !s.StabilityQuadraticLoadModel.Equals(referenceStructure.StabilityQuadraticLoadModel)));
+            differentStructures.Add(structures.Single(s => !s.AreaFlowApertures.Equals(referenceStructure.AreaFlowApertures)));
+            differentStructures.Add(structures.Single(s => !s.InflowModelType.Equals(referenceStructure.InflowModelType)));
+            Assert.AreEqual(25, differentStructures.Count);
+        }
+    }
+}
\ No newline at end of file
Index: Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.TestUtil/StabilityPointStructurePermutationHelper.cs
===================================================================
diff -u -r597f2ecd0c9cb1aedf4bef978b209d49f63b08fe -rad440d0e14ea249a0ae198e634ab6aa5d72a3977
--- Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.TestUtil/StabilityPointStructurePermutationHelper.cs	(.../StabilityPointStructurePermutationHelper.cs)	(revision 597f2ecd0c9cb1aedf4bef978b209d49f63b08fe)
+++ Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.TestUtil/StabilityPointStructurePermutationHelper.cs	(.../StabilityPointStructurePermutationHelper.cs)	(revision ad440d0e14ea249a0ae198e634ab6aa5d72a3977)
@@ -55,7 +55,7 @@
 
             var testCaseData = new List<TestCaseData>
             {
-                new TestCaseData(new TestStabilityPointStructure(referenceStructure.Id, "Different name"))
+                new TestCaseData(new TestStabilityPointStructure("Different name", referenceStructure.Id))
                     .SetName($"{targetName}_DifferentName_{testResultDescription}"),
                 new TestCaseData(new TestStabilityPointStructure(new Point2D(1, 1), referenceStructure.Id))
                     .SetName($"{targetName}_DifferentLocation_{testResultDescription}")
@@ -351,7 +351,7 @@
                 BankWidth =
                 {
                     Mean = referenceStructure.BankWidth.Mean,
-                    StandardDeviation = referenceStructure.BankWidth.Mean
+                    StandardDeviation = referenceStructure.BankWidth.StandardDeviation
                 },
                 InsideWaterLevelFailureConstruction =
                 {