Index: Riskeer/Integration/src/Riskeer.Integration.Service/RiskeerDataSynchronizationService.cs
===================================================================
diff -u -r0699b957e995bdc3ab9436ab3682f879cb5348d3 -r8fbea5d16d01dc93873f021b00bf423f89f481f9
--- Riskeer/Integration/src/Riskeer.Integration.Service/RiskeerDataSynchronizationService.cs	(.../RiskeerDataSynchronizationService.cs)	(revision 0699b957e995bdc3ab9436ab3682f879cb5348d3)
+++ Riskeer/Integration/src/Riskeer.Integration.Service/RiskeerDataSynchronizationService.cs	(.../RiskeerDataSynchronizationService.cs)	(revision 8fbea5d16d01dc93873f021b00bf423f89f481f9)
@@ -330,12 +330,12 @@
         }
 
         /// <summary>
-        /// Clears all illustration point results of the user specified probability based water level calculations.
+        /// Clears all illustration point results of the user defined probability based water level calculations.
         /// </summary>
         /// <param name="assessmentSection">The <see cref="IAssessmentSection"/> to clear the illustration point results for.</param>
         /// <returns>All objects that are affected by the operation.</returns>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="assessmentSection"/> is <c>null</c>.</exception>
-        public static IEnumerable<IObservable> ClearIllustrationPointResultsOfWaterLevelCalculationsForUserSpecifiedProbabilities(IAssessmentSection assessmentSection)
+        public static IEnumerable<IObservable> ClearIllustrationPointResultsOfWaterLevelCalculationsForUserDefinedProbabilities(IAssessmentSection assessmentSection)
         {
             if (assessmentSection == null)
             {
@@ -354,12 +354,12 @@
         }
 
         /// <summary>
-        /// Clears all illustration point results of the user specified probability based wave height calculations.
+        /// Clears all illustration point results of the user defined probability based wave height calculations.
         /// </summary>
         /// <param name="assessmentSection">The <see cref="IAssessmentSection"/> to clear the illustration point results for.</param>
         /// <returns>All objects that are affected by the operation.</returns>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="assessmentSection"/> is <c>null</c>.</exception>
-        public static IEnumerable<IObservable> ClearIllustrationPointResultsOfWaveHeightCalculationsForUserSpecifiedProbabilities(IAssessmentSection assessmentSection)
+        public static IEnumerable<IObservable> ClearIllustrationPointResultsOfWaveHeightCalculationsForUserDefinedProbabilities(IAssessmentSection assessmentSection)
         {
             if (assessmentSection == null)
             {
Index: Riskeer/Integration/test/Riskeer.Integration.Service.Test/RiskeerDataSynchronizationServiceTest.cs
===================================================================
diff -u -r96584fe8bb52c338f79e2a3296c2417a8a5807cc -r8fbea5d16d01dc93873f021b00bf423f89f481f9
--- Riskeer/Integration/test/Riskeer.Integration.Service.Test/RiskeerDataSynchronizationServiceTest.cs	(.../RiskeerDataSynchronizationServiceTest.cs)	(revision 96584fe8bb52c338f79e2a3296c2417a8a5807cc)
+++ Riskeer/Integration/test/Riskeer.Integration.Service.Test/RiskeerDataSynchronizationServiceTest.cs	(.../RiskeerDataSynchronizationServiceTest.cs)	(revision 8fbea5d16d01dc93873f021b00bf423f89f481f9)
@@ -568,6 +568,39 @@
         }
 
         [Test]
+        public void ClearIllustrationPointResultsOfWaterLevelCalculationsForNormProbabilities_AssessmentSectionNull_ThrowsArgumentNullException()
+        {
+            // Call
+            void Call() => RiskeerDataSynchronizationService.ClearIllustrationPointResultsOfWaterLevelCalculationsForNormProbabilities(null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(Call);
+            Assert.AreEqual("assessmentSection", exception.ParamName);
+        }
+
+        [Test]
+        public void ClearIllustrationPointResultsOfWaterLevelCalculationsForUserDefinedProbabilities_AssessmentSectionNull_ThrowsArgumentNullException()
+        {
+            // Call
+            void Call() => RiskeerDataSynchronizationService.ClearIllustrationPointResultsOfWaterLevelCalculationsForUserDefinedProbabilities(null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(Call);
+            Assert.AreEqual("assessmentSection", exception.ParamName);
+        }
+
+        [Test]
+        public void ClearIllustrationPointResultsOfWaveHeightCalculationsForUserDefinedProbabilities_AssessmentSectionNull_ThrowsArgumentNullException()
+        {
+            // Call
+            void Call() => RiskeerDataSynchronizationService.ClearIllustrationPointResultsOfWaveHeightCalculationsForUserDefinedProbabilities(null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(Call);
+            Assert.AreEqual("assessmentSection", exception.ParamName);
+        }
+
+        [Test]
         public void ClearIllustrationPointResultsForDesignWaterLevelCalculations_AssessmentSectionNull_ThrowsArgumentNullException()
         {
             // Call