Index: Ringtoets/Piping/src/Ringtoets.Piping.IO/Builders/SoilLayer1D.cs
===================================================================
diff -u -rcb6877f670bacc7a6a896ab132d592eeef1107b5 -r6e00eba7f45883916d98df04a84f6d0dca2f61fc
--- Ringtoets/Piping/src/Ringtoets.Piping.IO/Builders/SoilLayer1D.cs	(.../SoilLayer1D.cs)	(revision cb6877f670bacc7a6a896ab132d592eeef1107b5)
+++ Ringtoets/Piping/src/Ringtoets.Piping.IO/Builders/SoilLayer1D.cs	(.../SoilLayer1D.cs)	(revision 6e00eba7f45883916d98df04a84f6d0dca2f61fc)
@@ -51,9 +51,11 @@
         /// Constructs a (1D) <see cref="PipingSoilLayer"/> based on the properties set for the <see cref="SoilLayer1D"/>.
         /// </summary>
         /// <returns>The <see cref="PipingSoilLayer"/> with properties corresponding to those set on the <see cref="SoilLayer1D"/>.</returns>
+        /// <exception cref="SoilLayerConversionException">Thrown when any of the distributions of the
+        /// stochastic parameters is not defined as lognormal.</exception>
         internal PipingSoilLayer AsPipingSoilLayer()
         {
-            ValidateFieldsForPiping();
+            ValidateStochasticParametersForPiping();
 
             var pipingSoilLayer = new PipingSoilLayer(Top)
             {
@@ -62,7 +64,7 @@
                 Color = SoilLayerColorConversionHelper.ColorFromNullableDouble(Color)
             };
 
-            SetOptionalFields(pipingSoilLayer);
+            SetOptionalStochasticParameters(pipingSoilLayer);
 
             return pipingSoilLayer;
         }