Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.IO/Writers/GrassCoverErosionInwardsCalculationConfigurationWriter.cs
===================================================================
diff -u -r7a466d4ccb9d859b47f565b400808eb6933b18f0 -r71d49118c3ebc21c6c78375c31ed3c8b2e9753ed
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.IO/Writers/GrassCoverErosionInwardsCalculationConfigurationWriter.cs	(.../GrassCoverErosionInwardsCalculationConfigurationWriter.cs)	(revision 7a466d4ccb9d859b47f565b400808eb6933b18f0)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.IO/Writers/GrassCoverErosionInwardsCalculationConfigurationWriter.cs	(.../GrassCoverErosionInwardsCalculationConfigurationWriter.cs)	(revision 71d49118c3ebc21c6c78375c31ed3c8b2e9753ed)
@@ -75,6 +75,11 @@
 
         private static void WriteWaveReduction(GrassCoverErosionInwardsInput input, XmlWriter writer)
         {
+            if (input.DikeProfile == null)
+            {
+                return;
+            }
+
             writer.WriteStartElement(ConfigurationSchemaIdentifiers.WaveReduction);
 
             writer.WriteElementString(
Index: Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.IO.Test/Writers/GrassCoverErosionInwardsCalculationConfigurationWriterTest.cs
===================================================================
diff -u -r96cd93f1a08294e5af3fec5f5ae0b59cbe914c4b -r71d49118c3ebc21c6c78375c31ed3c8b2e9753ed
--- Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.IO.Test/Writers/GrassCoverErosionInwardsCalculationConfigurationWriterTest.cs	(.../GrassCoverErosionInwardsCalculationConfigurationWriterTest.cs)	(revision 96cd93f1a08294e5af3fec5f5ae0b59cbe914c4b)
+++ Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.IO.Test/Writers/GrassCoverErosionInwardsCalculationConfigurationWriterTest.cs	(.../GrassCoverErosionInwardsCalculationConfigurationWriterTest.cs)	(revision 71d49118c3ebc21c6c78375c31ed3c8b2e9753ed)
@@ -141,7 +141,7 @@
                 TestDataPath.Ringtoets.GrassCoverErosionInwards.IO,
                 Path.Combine(nameof(GrassCoverErosionInwardsCalculationConfigurationWriter), "sparseConfiguration.xml"));
 
-            var calculation = new GrassCoverErosionInwardsCalculation()
+            var calculation = new GrassCoverErosionInwardsCalculation
             {
                 Name = "Berekening 1"
             };
Index: Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.IO.Test/test-data/GrassCoverErosionInwardsCalculationConfigurationExporter/folderWithSubfolderAndCalculation.xml
===================================================================
diff -u -rf9f7e585da06fc8ab1b8ab92ce4dd64bd66d8f04 -r71d49118c3ebc21c6c78375c31ed3c8b2e9753ed
--- Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.IO.Test/test-data/GrassCoverErosionInwardsCalculationConfigurationExporter/folderWithSubfolderAndCalculation.xml	(.../folderWithSubfolderAndCalculation.xml)	(revision f9f7e585da06fc8ab1b8ab92ce4dd64bd66d8f04)
+++ Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.IO.Test/test-data/GrassCoverErosionInwardsCalculationConfigurationExporter/folderWithSubfolderAndCalculation.xml	(.../folderWithSubfolderAndCalculation.xml)	(revision 71d49118c3ebc21c6c78375c31ed3c8b2e9753ed)
@@ -3,12 +3,6 @@
   <map naam="Testmap">
     <berekening naam="Berekening 1">
       <orientatie>NaN</orientatie>
-      <golfreductie>
-        <damgebruiken>false</damgebruiken>
-        <damtype>havendam</damtype>
-        <damhoogte>0</damhoogte>
-        <voorlandgebruiken>false</voorlandgebruiken>
-      </golfreductie>
       <stochasten>
         <stochast naam="overslagdebiet">
           <verwachtingswaarde>0.004</verwachtingswaarde>
@@ -19,12 +13,6 @@
     <map naam="Nested">
       <berekening naam="Berekening 2">
         <orientatie>NaN</orientatie>
-        <golfreductie>
-          <damgebruiken>false</damgebruiken>
-          <damtype>havendam</damtype>
-          <damhoogte>0</damhoogte>
-          <voorlandgebruiken>false</voorlandgebruiken>
-        </golfreductie>
         <stochasten>
           <stochast naam="overslagdebiet">
             <verwachtingswaarde>0.004</verwachtingswaarde>
Index: Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.IO.Test/test-data/GrassCoverErosionInwardsCalculationConfigurationWriter/folderWithSubfolderAndCalculation.xml
===================================================================
diff -u -r9eb8e313e0f401980ca0a4b8015d23e8a12735f7 -r71d49118c3ebc21c6c78375c31ed3c8b2e9753ed
--- Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.IO.Test/test-data/GrassCoverErosionInwardsCalculationConfigurationWriter/folderWithSubfolderAndCalculation.xml	(.../folderWithSubfolderAndCalculation.xml)	(revision 9eb8e313e0f401980ca0a4b8015d23e8a12735f7)
+++ Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.IO.Test/test-data/GrassCoverErosionInwardsCalculationConfigurationWriter/folderWithSubfolderAndCalculation.xml	(.../folderWithSubfolderAndCalculation.xml)	(revision 71d49118c3ebc21c6c78375c31ed3c8b2e9753ed)
@@ -21,12 +21,6 @@
     <map naam="Nested">
       <berekening naam="Berekening 2">
         <orientatie>NaN</orientatie>
-        <golfreductie>
-          <damgebruiken>false</damgebruiken>
-          <damtype>havendam</damtype>
-          <damhoogte>0</damhoogte>
-          <voorlandgebruiken>false</voorlandgebruiken>
-        </golfreductie>
         <stochasten>
           <stochast naam="overslagdebiet">
             <verwachtingswaarde>0.004</verwachtingswaarde>
Index: Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.IO.Test/test-data/GrassCoverErosionInwardsCalculationConfigurationWriter/sparseConfiguration.xml
===================================================================
diff -u -r9eb8e313e0f401980ca0a4b8015d23e8a12735f7 -r71d49118c3ebc21c6c78375c31ed3c8b2e9753ed
--- Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.IO.Test/test-data/GrassCoverErosionInwardsCalculationConfigurationWriter/sparseConfiguration.xml	(.../sparseConfiguration.xml)	(revision 9eb8e313e0f401980ca0a4b8015d23e8a12735f7)
+++ Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.IO.Test/test-data/GrassCoverErosionInwardsCalculationConfigurationWriter/sparseConfiguration.xml	(.../sparseConfiguration.xml)	(revision 71d49118c3ebc21c6c78375c31ed3c8b2e9753ed)
@@ -2,12 +2,6 @@
 <configuratie>
   <berekening naam="Berekening 1">
     <orientatie>NaN</orientatie>
-    <golfreductie>
-      <damgebruiken>false</damgebruiken>
-      <damtype>havendam</damtype>
-      <damhoogte>0</damhoogte>
-      <voorlandgebruiken>false</voorlandgebruiken>
-    </golfreductie>
     <stochasten>
       <stochast naam="overslagdebiet">
         <verwachtingswaarde>0.004</verwachtingswaarde>