Index: Application/Ringtoets/src/Application.Ringtoets.Storage/Create/GrassCoverErosionInwardsFailureMechanismCreateExtensions.cs
===================================================================
diff -u -r43041b7b9647e0b5e8b3758443206b53a3c16511 -r93f4c75ba2309bb82de7e2362bafca5aa516d545
--- Application/Ringtoets/src/Application.Ringtoets.Storage/Create/GrassCoverErosionInwardsFailureMechanismCreateExtensions.cs	(.../GrassCoverErosionInwardsFailureMechanismCreateExtensions.cs)	(revision 43041b7b9647e0b5e8b3758443206b53a3c16511)
+++ Application/Ringtoets/src/Application.Ringtoets.Storage/Create/GrassCoverErosionInwardsFailureMechanismCreateExtensions.cs	(.../GrassCoverErosionInwardsFailureMechanismCreateExtensions.cs)	(revision 93f4c75ba2309bb82de7e2362bafca5aa516d545)
@@ -47,6 +47,8 @@
             AddEntitiesForDikeProfiles(mechanism, registry, entity);
             AddEntitiesForSectionResults(mechanism.SectionResults, registry);
 
+            entity.CalculationGroupEntity = mechanism.CalculationsGroup.Create(registry, 0);
+
             registry.Register(entity, mechanism);
             return entity;
         }