Index: DamEngine/trunk/src/Deltares.DamEngine.Interface/FillDamFromXmlInput.cs
===================================================================
diff -u -r1536 -r1553
--- DamEngine/trunk/src/Deltares.DamEngine.Interface/FillDamFromXmlInput.cs	(.../FillDamFromXmlInput.cs)	(revision 1536)
+++ DamEngine/trunk/src/Deltares.DamEngine.Interface/FillDamFromXmlInput.cs	(.../FillDamFromXmlInput.cs)	(revision 1553)
@@ -27,6 +27,7 @@
 using Deltares.DamEngine.Data.General;
 using Deltares.DamEngine.Data.Geometry;
 using Deltares.DamEngine.Data.Geotechnics;
+using Deltares.DamEngine.Data.Standard.Logging;
 using Deltares.DamEngine.Interface.Properties;
 using Deltares.DamEngine.Io.XmlInput;
 using Location = Deltares.DamEngine.Data.General.Location;
@@ -69,7 +70,11 @@
             TransferSurfaceLines(input.SurfaceLines, dike.SurfaceLines2);
             dike.SoilList = new SoilList();
             TransferSoils(input.Soils, dike.SoilList.Soils);
-            TransferAquiferSoils(input.AquiferSoils, dike.SoilList);
+            var messages = TransferAquiferSoils(input.AquiferSoils, dike.SoilList);
+            if (messages.Count > 0)
+            {
+                damProjectData.CalculationMessages = messages;
+            }
             TransferSoilProfiles1D(input.SoilProfiles1D, dike.SoilProfiles, dike.SoilList);
             TransferSoilProfiles2D(input.SoilProfiles2D, dike.SoilProfiles2D, dike.SoilList);
             TransferSegments(input.Segments, damProjectData.Segments);
@@ -79,8 +84,9 @@
             return damProjectData;
         }
 
-        private static void TransferAquiferSoils(InputAquiferSoil[] inputAquiferSoils, SoilList soilList)
+        private static List<LogMessage> TransferAquiferSoils(InputAquiferSoil[] inputAquiferSoils, SoilList soilList)
         {
+            List<LogMessage> validationMessages = new List<LogMessage>();
             if (inputAquiferSoils != null)
             {
                 soilList.AquiferDictionary = new Dictionary<Data.Geotechnics.Soil, bool>();
@@ -93,13 +99,16 @@
                     }
                     else
                     {
+                        // If a soil is (wrongly) in the list more than once, then prefer aquifer true. 
                         if (aquiferSoil.IsAquifer)
-                        {
+                        { 
+                            validationMessages.Add(new LogMessage(LogMessageType.Warning, aquiferSoil, string.Format(Resources.DoubleAquiferSoil, aquiferSoil.Soilname)));
                             soilList.AquiferDictionary[soil] = true;
                         }
                     }
                 }
             }
+            return validationMessages;
         }
 
         private static void TransferAnalysisSpecification(Input input, DamProjectData damProjectData)