Index: DamEngine/trunk/src/Deltares.DamEngine.TestHelpers/Factories/FactoryForSoilProfiles.cs
===================================================================
diff -u -r7059 -r7073
--- DamEngine/trunk/src/Deltares.DamEngine.TestHelpers/Factories/FactoryForSoilProfiles.cs	(.../FactoryForSoilProfiles.cs)	(revision 7059)
+++ DamEngine/trunk/src/Deltares.DamEngine.TestHelpers/Factories/FactoryForSoilProfiles.cs	(.../FactoryForSoilProfiles.cs)	(revision 7073)
@@ -963,6 +963,18 @@
         return soilProfile2D;
     }
 
+    /// <summary>
+    /// Creates a rectangular soil layer.
+    /// </summary>
+    /// <param name="topCoord">The top coordinate of the layer.</param>
+    /// <param name="bottomCoord">The bottom coordinate of the layer.</param>
+    /// <param name="leftCoord">The left coordinate of the layer.</param>
+    /// <param name="rightCoord">The right coordinate of the layer.</param>
+    /// <param name="soilProfile2D">The soil profile 2D containing this created layer.</param>
+    /// <param name="soil">The soil material of the layer.</param>
+    /// <param name="isAquifer">Indicates if the layer is an aquifer.</param>
+    /// <param name="addLayerAsSurface">Indicates if the layer should be added to the soil profile as a surface.</param>
+    /// <returns></returns>
     public static SoilLayer2D CreateRectangularSoilLayer2D(double topCoord, double bottomCoord, double leftCoord,
                                                            double rightCoord, SoilProfile2D soilProfile2D, Soil soil = null, bool isAquifer = false, bool addLayerAsSurface = true)
     {
@@ -1009,6 +1021,15 @@
         ], soil, soilProfile2D, isAquifer);
     }
 
+    /// <summary>
+    /// Creates a polygonal soil layer.
+    /// </summary>
+    /// <param name="points">The points defining the polygon.</param>
+    /// <param name="soil">The soil material of the layer.</param>
+    /// <param name="soilProfile2D">The soil profile 2D containing this created layer.</param>
+    /// <param name="isAquifer">Indicates if the layer is an aquifer.</param>
+    /// <param name="addLayerAsSurface">Indicates if the layer should be added to the soil profile as a surface.</param>
+    /// <returns></returns>
     public static SoilLayer2D CreatePolygonSoilLayer2D(List<Point2D> points, Soil soil, SoilProfile2D soilProfile2D, bool isAquifer = false, bool addLayerAsSurface = true)
     {
         var soilLayer2D = new SoilLayer2D
Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/GeometryPointString.cs
===================================================================
diff -u -r7071 -r7073
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/GeometryPointString.cs	(.../GeometryPointString.cs)	(revision 7071)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/GeometryPointString.cs	(.../GeometryPointString.cs)	(revision 7073)
@@ -491,7 +491,13 @@
 
         return RelativeXzPosition.OnGeometricLine;
     }
-
+    
+    /// <summary>
+    /// Determines the relative position of a point to the geometric line in the XZ-plane.
+    /// </summary>
+    /// <param name="point">The point to check the position for.</param>
+    /// <param name="extraPolationMode">The extrapolation mode to use when determining the position.</param>
+    /// <returns></returns>
     public RelativeXzPosition PositionXzOfPointRelatedToExtrapolatedLine(Point2D point,
                                                                          ExtraPolationMode extraPolationMode = ExtraPolationMode.Beyond)
     {
Index: DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/IssuesTests.cs
===================================================================
diff -u -r7071 -r7073
--- DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/IssuesTests.cs	(.../IssuesTests.cs)	(revision 7071)
+++ DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/IssuesTests.cs	(.../IssuesTests.cs)	(revision 7073)
@@ -77,6 +77,8 @@
 
     private static void TestGeometryAndResult(string calcDirectory, string xmlInput, string location, string segment, int surfaceCount, int curveCount, int pointCount, int surfaceLinePointCount, double safetyFactor)
     {
+        const string partOfActualExceptionMessage = "DAM kon geen geldig 2D‑grondprofiel genereren bij het " +
+                                                    "combineren van de hoogtegeometrie uit het CSV‑bestand met het grondprofiel uit het STIX‑bestand.";
         if (Directory.Exists(calcDirectory))
         {
             Directory.Delete(calcDirectory, true); // delete previous results
@@ -103,7 +105,7 @@
         Soil soil = engineInterface.DamProjectData.Dike.SoilList.GetSoilByName(soilName);
         // To be able to check the geometry, create it here.
         SoilGeometryProbability soilProfile2DOriginal = engineInterface.DamProjectData.Segments.First(s => s.Name == segment).SoilProfileProbabilities[0];
-        var expectedException = "";
+        var actualExceptionMessage = "";
         SoilProfile2D soilProfile2D = null;
         try
         {
@@ -116,13 +118,12 @@
         }
         catch (Exception exception)
         {
-            expectedException = exception.Message;
+            actualExceptionMessage = exception.Message;
         }
 
         if (surfaceCount == 0)
         {
-            Assert.That(expectedException, Does.Contain("DAM kon geen geldig 2D‑grondprofiel genereren bij het " +
-                                                        "combineren van de hoogtegeometrie uit het CSV‑bestand met het grondprofiel uit het STIX‑bestand."));
+            Assert.That(actualExceptionMessage, Does.Contain(partOfActualExceptionMessage));
         }
         else
         {