Index: Riskeer/GrassCoverErosionOutwards/src/Riskeer.GrassCoverErosionOutwards.IO/Resources/GEBUConfiguratieSchema.xsd
===================================================================
diff -u -r86594ccd7329d320872573a1d066fe18959d3cea -r8cfebe1303041b7676b41e13df19c2b3d3e00499
--- Riskeer/GrassCoverErosionOutwards/src/Riskeer.GrassCoverErosionOutwards.IO/Resources/GEBUConfiguratieSchema.xsd	(.../GEBUConfiguratieSchema.xsd)	(revision 86594ccd7329d320872573a1d066fe18959d3cea)
+++ Riskeer/GrassCoverErosionOutwards/src/Riskeer.GrassCoverErosionOutwards.IO/Resources/GEBUConfiguratieSchema.xsd	(.../GEBUConfiguratieSchema.xsd)	(revision 8cfebe1303041b7676b41e13df19c2b3d3e00499)
@@ -38,4 +38,14 @@
       </xs:restriction>
     </xs:simpleType>
   </xs:redefine>
+
+  <xs:element name="typebelasting" substitutionGroup="typebekleding-of-typebelasting">
+    <xs:simpleType>
+      <xs:restriction base="xs:string">
+        <xs:enumeration value="Gras (golfoploop)"/>
+        <xs:enumeration value="Gras (golfklap)"/>
+        <xs:enumeration value="Gras (golfoploop en golfklap)"/>
+      </xs:restriction>
+    </xs:simpleType>
+  </xs:element>
 </xs:schema>
\ No newline at end of file
Index: Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.IO.Test/Configurations/GrassCoverErosionOutwardsWaveConditionsCalculationConfigurationReaderTest.cs
===================================================================
diff -u -r86594ccd7329d320872573a1d066fe18959d3cea -r8cfebe1303041b7676b41e13df19c2b3d3e00499
--- Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.IO.Test/Configurations/GrassCoverErosionOutwardsWaveConditionsCalculationConfigurationReaderTest.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationConfigurationReaderTest.cs)	(revision 86594ccd7329d320872573a1d066fe18959d3cea)
+++ Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.IO.Test/Configurations/GrassCoverErosionOutwardsWaveConditionsCalculationConfigurationReaderTest.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationConfigurationReaderTest.cs)	(revision 8cfebe1303041b7676b41e13df19c2b3d3e00499)
@@ -48,6 +48,16 @@
                 yield return new TestCaseData("invalidCategoryTypeUnknownValue.xml",
                                               "The 'categoriegrens' element is invalid - The value 'A' is invalid according to its datatype 'categoriegrensType' - The Enumeration constraint failed.")
                     .SetName("invalidCategoryTypeUnknownValue");
+
+                yield return new TestCaseData("invalidCalculationMultipleRevetmentType.xml",
+                                              "Element 'typebelasting' cannot appear more than once if content model type is \"all\".")
+                    .SetName("invalidCalculationMultipleRevetmentType");
+                yield return new TestCaseData("invalidRevetmentTypeUnknownValue.xml",
+                                              "The 'typebelasting' element is invalid - The value 'Gras' is invalid according to its datatype 'String' - The Enumeration constraint failed.")
+                    .SetName("invalidRevetmentTypeUnknownValue");
+                yield return new TestCaseData("invalidBoundaryType.xml",
+                                              "The element 'berekening' has invalid child element 'typebekleding'.")
+                    .SetName("invalidBoundaryType");
             }
         }
 
Index: Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.IO.Test/test-data/GrassCoverErosionOutwardsWaveConditionsCalculationConfigurationReader/invalidBoundaryType.xml
===================================================================
diff -u
--- Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.IO.Test/test-data/GrassCoverErosionOutwardsWaveConditionsCalculationConfigurationReader/invalidBoundaryType.xml	(revision 0)
+++ Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.IO.Test/test-data/GrassCoverErosionOutwardsWaveConditionsCalculationConfigurationReader/invalidBoundaryType.xml	(revision 8cfebe1303041b7676b41e13df19c2b3d3e00499)
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuratie>
+  <berekening naam="Calculation">
+    <typebekleding>Gras</typebekleding>
+  </berekening>
+</configuratie>
\ No newline at end of file
Index: Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.IO.Test/test-data/GrassCoverErosionOutwardsWaveConditionsCalculationConfigurationReader/invalidCalculationMultipleRevetmentType.xml
===================================================================
diff -u
--- Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.IO.Test/test-data/GrassCoverErosionOutwardsWaveConditionsCalculationConfigurationReader/invalidCalculationMultipleRevetmentType.xml	(revision 0)
+++ Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.IO.Test/test-data/GrassCoverErosionOutwardsWaveConditionsCalculationConfigurationReader/invalidCalculationMultipleRevetmentType.xml	(revision 8cfebe1303041b7676b41e13df19c2b3d3e00499)
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuratie>
+  <berekening naam="Calculation">
+    <typebelasting>Gras (golfoploop)</typebelasting>
+    <typebelasting>Gras (golfklap)</typebelasting>
+  </berekening>
+</configuratie>
\ No newline at end of file
Index: Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.IO.Test/test-data/GrassCoverErosionOutwardsWaveConditionsCalculationConfigurationReader/invalidRevetmentTypeUnknownValue.xml
===================================================================
diff -u
--- Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.IO.Test/test-data/GrassCoverErosionOutwardsWaveConditionsCalculationConfigurationReader/invalidRevetmentTypeUnknownValue.xml	(revision 0)
+++ Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.IO.Test/test-data/GrassCoverErosionOutwardsWaveConditionsCalculationConfigurationReader/invalidRevetmentTypeUnknownValue.xml	(revision 8cfebe1303041b7676b41e13df19c2b3d3e00499)
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuratie>
+  <berekening naam="Calculation">
+    <typebelasting>Gras</typebelasting>
+  </berekening>
+</configuratie>
\ No newline at end of file