Index: DamEngine/trunk/src/Deltares.DamEngine.Data/General/Dike.cs
===================================================================
diff -u -r5406 -r5426
--- DamEngine/trunk/src/Deltares.DamEngine.Data/General/Dike.cs	(.../Dike.cs)	(revision 5406)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/General/Dike.cs	(.../Dike.cs)	(revision 5426)
@@ -203,7 +203,7 @@
         locations = Locations.OrderBy(o => o.Name).ToList();
     }
 
-    public void Validate(bool isOperational)
+    public void Validate(bool isOperational, bool isPiping)
     {
         if (Locations == null || Locations.Count < 1)
         {
@@ -212,6 +212,24 @@
 
         foreach (Location location in Locations)
         {
+            if (isPiping)
+            {
+                if (location.Segment == null)
+                {
+                    throw new DikeException("Location " + location.Name + " has no segment defined");
+                }
+
+                if (location.Segment.SoilProfileProbabilities.Count < 1)
+                {
+                    throw new DikeException("Location " + location.Name + " has no soil profiles defined");
+                }
+
+                if (location.Segment.SoilProfileProbabilities[0].SoilProfile2D != null)
+                {
+                    throw new DikeException("A piping calculation with a 2D-geometry is not supported.");
+                }
+            }
+            
             if (location.SurfaceLine != null)
             {
                 var validator = new SurfaceLine2Validator();
Index: DamEngine/trunk/src/Deltares.DamEngine.Interface/EngineInterface.cs
===================================================================
diff -u -r4540 -r5426
--- DamEngine/trunk/src/Deltares.DamEngine.Interface/EngineInterface.cs	(.../EngineInterface.cs)	(revision 4540)
+++ DamEngine/trunk/src/Deltares.DamEngine.Interface/EngineInterface.cs	(.../EngineInterface.cs)	(revision 5426)
@@ -105,7 +105,9 @@
 
         try
         {
-            DamProjectData.Dike.Validate(DamProjectData.DamProjectType == DamProjectType.Operational);
+            bool isOperational = DamProjectData.DamProjectType == DamProjectType.Operational;
+            bool isPiping = DamProjectData.DamProjectCalculationSpecification.CurrentSpecification.FailureMechanismSystemType == FailureMechanismSystemType.Piping;
+            DamProjectData.Dike.Validate(isOperational, isPiping);
         }
         catch (Exception e)
         {
Index: DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/PipingBlighTests.cs
===================================================================
diff -u -r5248 -r5426
--- DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/PipingBlighTests.cs	(.../PipingBlighTests.cs)	(revision 5248)
+++ DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/PipingBlighTests.cs	(.../PipingBlighTests.cs)	(revision 5426)
@@ -26,6 +26,7 @@
 using Deltares.DamEngine.Data.Geotechnics;
 using Deltares.DamEngine.Data.Standard.Calculation;
 using Deltares.DamEngine.Interface;
+using Deltares.DamEngine.Io.XmlInput;
 using Deltares.DamEngine.Io.XmlOutput;
 using Deltares.DamEngine.TestHelpers;
 using NUnit.Framework;
@@ -280,4 +281,41 @@
             Assert.That(output.Results.CalculationMessages[4].Message1, Does.Contain("no uplift"));
         });
     }
+
+    [Test]
+    public void TestRunPipingBlighWithGeometry2DIsNotPossible()
+    {
+        // Based on DAM Tutorial Design.damx
+        // Except for the following changes:
+        // - Calculation type is Piping in segments.csv (instead of Stability)
+        // - Select model Piping Bligh
+        // - Select 1st location (DWP_1)
+        const string calcDir = "TestRunPipingBlighWithGeometry2DIsNotPossible";
+        if (Directory.Exists(calcDir))
+        {
+            Directory.Delete(calcDir, true); // delete previous results
+        }
+
+        const string tutorialStability2D = @"InputTutorialStability2D.xml";
+        string inputString = File.ReadAllText(tutorialStability2D);
+        string[] locations = ["DWP_1"];
+        inputString = XmlAdapter.SelectLocations(inputString, locations);
+
+        inputString = XmlAdapter.ChangeValueInXml(inputString, "ProjectPath", ""); // Current directory will be used
+        inputString = XmlAdapter.ChangeValueInXml(inputString, "CalculationMap", calcDir); // Current directory will be used
+        inputString = XmlAdapter.ChangeValueInXml(inputString, "FailureMechanismSystemType", "2"); // Piping
+        inputString = XmlAdapter.ChangeValueInXml(inputString, "SegmentFailureMechanismType", "2"); // Piping
+        inputString = XmlAdapter.ChangeStabilityToPiping(inputString);
+        inputString = XmlAdapter.ChangePipingInputModel(inputString, InputPipingModelType.Bligh);
+
+        var engineInterface = new EngineInterface(inputString);
+        string validationMessages = engineInterface.Validate();
+        Assert.Multiple(() =>
+        {
+            Assert.That(validationMessages, Does.Contain("A piping calculation with a 2D-geometry is not supported."));
+            Assert.That(engineInterface.DamProjectData.CalculationMessages, Has.Count.EqualTo(1));
+        });
+        Assert.That(engineInterface.DamProjectData.CalculationMessages[0].Message, Does.Contain("A piping calculation with a 2D-geometry is not supported."));
+    }
+
 }
\ No newline at end of file
Index: DamEngine/trunk/src/Deltares.DamEngine.TestHelpers/XmlAdapter.cs
===================================================================
diff -u -r5397 -r5426
--- DamEngine/trunk/src/Deltares.DamEngine.TestHelpers/XmlAdapter.cs	(.../XmlAdapter.cs)	(revision 5397)
+++ DamEngine/trunk/src/Deltares.DamEngine.TestHelpers/XmlAdapter.cs	(.../XmlAdapter.cs)	(revision 5426)
@@ -21,30 +21,36 @@
 
 using System.Linq;
 using System.Text.RegularExpressions;
+using Deltares.DamEngine.Io.XmlInput;
 
 namespace Deltares.DamEngine.TestHelpers;
 
 /// <summary>
 /// Helper class for adapting xml in tests
 /// </summary>
-public class XmlAdapter
+public static class XmlAdapter
 {
     /// <summary>
     /// Changes in an XML the value of all elements with the specified key to the specified value.
     /// </summary>
     /// <param name="input">The input.</param>
     /// <param name="key">The key.</param>
     /// <param name="value">The value.</param>
-    /// <returns></returns>
+    /// <returns>The modified input</returns>
     public static string ChangeValueInXml(string input, string key, string value)
     {
-        string result = input;
         string searchString = key + "=" + "\"([^\"]*)\""; // This means match any pattern which matches <key>="<StringWithAnyCharacterExceptQuote>"
         string replacement = key + "=\"" + value + "\""; // Replace with <key>="<value>"
-        result = Regex.Replace(input, searchString, replacement, RegexOptions.IgnorePatternWhitespace);
+        string result = Regex.Replace(input, searchString, replacement, RegexOptions.IgnorePatternWhitespace);
         return result;
     }
-
+    
+    /// <summary>
+    /// Selects locations from an XML based on the location names by removing the other locations.
+    /// </summary>
+    /// <param name="input">The input.</param>
+    /// <param name="locationNames">The names of the locations that need to be selected.</param>
+    /// <returns>The modified input</returns>
     public static string SelectLocations(string input, string[] locationNames)
     {
         string result = input;
@@ -61,4 +67,58 @@
         return result;
     }
 
+    /// <summary>
+    /// Changes the stability input model.
+    /// </summary>
+    /// <param name="input">The input.</param>
+    /// <param name="stabilityModelType">The stability input model</param>
+    /// <returns>The modified input</returns>
+    public static string ChangeStabilityInputModel(string input, InputStabilityModelType stabilityModelType)
+    {
+        const string pattern = "StabilityModelType=\"[a-zA-Z]+\"";
+        string replacement = stabilityModelType switch
+        {
+            InputStabilityModelType.Bishop => "StabilityModelType=\"Bishop\"",
+            InputStabilityModelType.UpliftVan => "StabilityModelType=\"UpliftVan\"",
+            InputStabilityModelType.BishopUpliftVan => "StabilityModelType=\"BishopUpliftVan\"",
+            _ => pattern
+        };
+        string result = Regex.Replace(input, pattern, replacement);
+        return result;
+    }
+    
+    /// <summary>
+    /// Changes the piping input model.
+    /// </summary>
+    /// <param name="input">The input.</param>
+    /// <param name="pipingModelType">The piping input model</param>
+    /// <returns>The modified input</returns>
+    public static string ChangePipingInputModel(string input, InputPipingModelType pipingModelType)
+    {
+        const string pattern = "PipingModelType=\"[a-zA-Z]+\"";
+        string replacement = pipingModelType switch
+        {
+            InputPipingModelType.Bligh => "PipingModelType=\"Bligh\"",
+            InputPipingModelType.WtiSellmeijerRevised => "PipingModelType=\"WtiSellmeijerRevised\"",
+            InputPipingModelType.Sellmeijer4Forces => "PipingModelType=\"Sellmeijer4Forces\"",
+            InputPipingModelType.SellmeijerVnk => "PipingModelType=\"SellmeijerVnk\"",
+            _ => pattern
+        };
+        string result = Regex.Replace(input, pattern, replacement);
+        return result;
+    }
+
+    /// <summary>
+    /// Changes the stability model type to piping model type.
+    /// </summary>
+    /// <param name="input">The input.</param>
+    /// <returns>The modified input</returns>
+    public static string ChangeStabilityToPiping(string input)
+    {
+        const string pattern = "StabilityModelType=";
+        const string replacement = "PipingModelType=";
+        string result = Regex.Replace(input, pattern, replacement);
+        return result;
+    }
+    
 }
\ No newline at end of file
Index: DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/MacroStabilityInwardsTests.cs
===================================================================
diff -u -r5411 -r5426
--- DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/MacroStabilityInwardsTests.cs	(.../MacroStabilityInwardsTests.cs)	(revision 5411)
+++ DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/MacroStabilityInwardsTests.cs	(.../MacroStabilityInwardsTests.cs)	(revision 5426)
@@ -23,7 +23,6 @@
 using System.Globalization;
 using System.IO;
 using System.Linq;
-using System.Text.RegularExpressions;
 using System.Threading;
 using Deltares.DamEngine.Data.General;
 using Deltares.DamEngine.Data.Geometry;
@@ -128,7 +127,7 @@
         string[] locations = ["DWP_1"];
         inputString = XmlAdapter.SelectLocations(inputString, locations);
 
-        inputString = ChangeInputModel(inputString, InputStabilityModelType.UpliftVan);
+        inputString = XmlAdapter.ChangeStabilityInputModel(inputString, InputStabilityModelType.UpliftVan);
         inputString = XmlAdapter.ChangeValueInXml(inputString, "ProjectPath", ""); // Current directory will be used
         inputString = XmlAdapter.ChangeValueInXml(inputString, "CalculationMap", calcDir); // Current directory will be used
 
@@ -185,7 +184,7 @@
         string[] locations = ["DWP_1"];
         inputString = XmlAdapter.SelectLocations(inputString, locations);
 
-        inputString = ChangeInputModel(inputString, InputStabilityModelType.BishopUpliftVan);
+        inputString = XmlAdapter.ChangeStabilityInputModel(inputString, InputStabilityModelType.BishopUpliftVan);
         inputString = XmlAdapter.ChangeValueInXml(inputString, "ProjectPath", ""); // Current directory will be used
         inputString = XmlAdapter.ChangeValueInXml(inputString, "CalculationMap", calcDir); // Current directory will be used
 
@@ -246,7 +245,7 @@
         string[] locations = ["DWP_22"];
         inputString = XmlAdapter.SelectLocations(inputString, locations);
         
-        inputString = ChangeInputModel(inputString, InputStabilityModelType.BishopUpliftVan);
+        inputString = XmlAdapter.ChangeStabilityInputModel(inputString, InputStabilityModelType.BishopUpliftVan);
         inputString = XmlAdapter.ChangeValueInXml(inputString, "ProjectPath", ""); // Current directory will be used
         inputString = XmlAdapter.ChangeValueInXml(inputString, "CalculationMap", calcDir); // Current directory will be used
         inputString = XmlAdapter.ChangeValueInXml(inputString, "SearchMethod", "2");
@@ -307,7 +306,7 @@
         string[] locations = ["DWP_18"];
         inputString = XmlAdapter.SelectLocations(inputString, locations);
 
-        inputString = ChangeInputModel(inputString, InputStabilityModelType.BishopUpliftVan);
+        inputString = XmlAdapter.ChangeStabilityInputModel(inputString, InputStabilityModelType.BishopUpliftVan);
         inputString = XmlAdapter.ChangeValueInXml(inputString, "ProjectPath", ""); // Current directory will be used
         inputString = XmlAdapter.ChangeValueInXml(inputString, "CalculationMap", calcDir); // Current directory will be used
 
@@ -593,7 +592,7 @@
         // Test to see if calculation does NOT work in this case as it must fail with water level above dike top.
         Output output = GetOutputStringForProject(analysisType, false);
 
-        Assert.That(output.Results.CalculationMessages.Length, Is.EqualTo(2));
+        Assert.That(output.Results.CalculationMessages, Has.Length.EqualTo(2));
         Assert.Multiple(() =>
         {
             Assert.That(output.Results.CalculationMessages[0].Message1, Does.Contain("Location 'DWP_1', subsoil scenario 'DWP_1.stix', design scenario '1': The preparation for this calculation failed."));
@@ -619,7 +618,7 @@
 
         const string fileName = @"TestFiles\DeltaDijkBishopInwards.xml";
         string inputString = File.ReadAllText(fileName);
-        inputString = ChangeInputModel(inputString, InputStabilityModelType.Bishop);
+        inputString = XmlAdapter.ChangeStabilityInputModel(inputString, InputStabilityModelType.Bishop);
         inputString = XmlAdapter.ChangeValueInXml(inputString, "ProjectPath", ""); // Current directory will be used
         inputString = XmlAdapter.ChangeValueInXml(inputString, "CalculationMap", calcDir); // Current directory will be used
 
@@ -688,7 +687,7 @@
         // Read as Bishop, then change to UpliftVan
         const string fileName = @"TestFiles\DeltaDijkBishopInwards.xml";
         string inputString = File.ReadAllText(fileName);
-        inputString = ChangeInputModel(inputString, InputStabilityModelType.UpliftVan);
+        inputString = XmlAdapter.ChangeStabilityInputModel(inputString, InputStabilityModelType.UpliftVan);
         inputString = XmlAdapter.ChangeValueInXml(inputString, "ProjectPath", ""); // Current directory will be used
         inputString = XmlAdapter.ChangeValueInXml(inputString, "CalculationMap", calcDir); // Current directory will be used
 
@@ -766,7 +765,7 @@
 
         const string fileName = @"TestFiles\DeltaDijkBishopInwards.xml";
         string inputString = File.ReadAllText(fileName);
-        inputString = ChangeInputModel(inputString, InputStabilityModelType.BishopUpliftVan);
+        inputString = XmlAdapter.ChangeStabilityInputModel(inputString, InputStabilityModelType.BishopUpliftVan);
         inputString = XmlAdapter.ChangeValueInXml(inputString, "ProjectPath", ""); // Current directory will be used
         inputString = XmlAdapter.ChangeValueInXml(inputString, "CalculationMap", calcDir); // Current directory will be used
 
@@ -853,7 +852,7 @@
 
         const string fileName = @"TestFiles\DeltaDijkBishopInwards.xml";
         string inputString = File.ReadAllText(fileName);
-        inputString = ChangeInputModel(inputString, InputStabilityModelType.BishopUpliftVan);
+        inputString = XmlAdapter.ChangeStabilityInputModel(inputString, InputStabilityModelType.BishopUpliftVan);
         inputString = XmlAdapter.ChangeValueInXml(inputString, "ProjectPath", ""); // Current directory will be used
         inputString = XmlAdapter.ChangeValueInXml(inputString, "CalculationMap", calcDir); // Current directory will be used
         inputString = XmlAdapter.ChangeValueInXml(inputString, "UpliftCriterionStability", @"1.0");
@@ -951,27 +950,6 @@
         return GeneralHelper.RunAfterInputValidation(inputString, isSuccessful);
     }
 
-    private string ChangeInputModel(string input, InputStabilityModelType modelType)
-    {
-        var pattern = "StabilityModelType=\"[a-zA-Z]+\"";
-        string replacement = pattern;
-        switch (modelType)
-        {
-            case InputStabilityModelType.Bishop:
-                replacement = "StabilityModelType=\"Bishop\"";
-                break;
-            case InputStabilityModelType.UpliftVan:
-                replacement = "StabilityModelType=\"UpliftVan\"";
-                break;
-            case InputStabilityModelType.BishopUpliftVan:
-                replacement = "StabilityModelType=\"BishopUpliftVan\"";
-                break;
-        }
-
-        string result = Regex.Replace(input, pattern, replacement);
-        return result;
-    }
-
     private static void CheckCalculationResults(DesignResult output, string locationName, string profileName, DesignResultStabilityDesignResultsStabilityModelType model, double safetyFactor, bool isUplift, CalculationResult result)
     {