Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/AssemblyFactories/MacroStabilityOutwardsFailureMechanismAssemblyFactory.cs
===================================================================
diff -u -r5074f618d0207c1a9cb63d2c8a4a1b92a944dc73 -rf1d9e7cfbfff37c23c610fdc3430607d936d5e91
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/AssemblyFactories/MacroStabilityOutwardsFailureMechanismAssemblyFactory.cs	(.../MacroStabilityOutwardsFailureMechanismAssemblyFactory.cs)	(revision 5074f618d0207c1a9cb63d2c8a4a1b92a944dc73)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/AssemblyFactories/MacroStabilityOutwardsFailureMechanismAssemblyFactory.cs	(.../MacroStabilityOutwardsFailureMechanismAssemblyFactory.cs)	(revision f1d9e7cfbfff37c23c610fdc3430607d936d5e91)
@@ -158,10 +158,15 @@
 
             try
             {
+                double n = failureMechanism.MacroStabilityOutwardsProbabilityAssessmentInput.GetN(
+                    failureMechanism.MacroStabilityOutwardsProbabilityAssessmentInput.SectionLength);
+
                 return calculator.AssembleTailorMadeAssessment(
                     failureMechanismSectionResult.TailorMadeAssessmentResult,
                     failureMechanismSectionResult.TailorMadeAssessmentProbability,
-                    CreateAssemblyCategoriesInput(failureMechanism, assessmentSection)).Group;
+                    assessmentSection.FailureMechanismContribution.Norm,
+                    n,
+                    failureMechanism.Contribution).Group;
             }
             catch (FailureMechanismSectionAssemblyCalculatorException e)
             {
Index: Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/AssemblyFactories/MacroStabilityOutwardsFailureMechanismAssemblyFactoryTest.cs
===================================================================
diff -u -r5074f618d0207c1a9cb63d2c8a4a1b92a944dc73 -rf1d9e7cfbfff37c23c610fdc3430607d936d5e91
--- Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/AssemblyFactories/MacroStabilityOutwardsFailureMechanismAssemblyFactoryTest.cs	(.../MacroStabilityOutwardsFailureMechanismAssemblyFactoryTest.cs)	(revision 5074f618d0207c1a9cb63d2c8a4a1b92a944dc73)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/AssemblyFactories/MacroStabilityOutwardsFailureMechanismAssemblyFactoryTest.cs	(.../MacroStabilityOutwardsFailureMechanismAssemblyFactoryTest.cs)	(revision f1d9e7cfbfff37c23c610fdc3430607d936d5e91)
@@ -376,7 +376,11 @@
                 // Assert
                 Assert.AreEqual(sectionResult.TailorMadeAssessmentProbability, calculator.TailorMadeAssessmentProbabilityInput);
                 Assert.AreEqual(sectionResult.TailorMadeAssessmentResult, calculator.TailorMadeAssessmentProbabilityAndDetailedCalculationResultInput);
-                AssertAssemblyCategoriesInput(assessmentSection, failureMechanism, calculator.AssemblyCategoriesInput);
+                Assert.AreEqual(assessmentSection.FailureMechanismContribution.Norm, calculator.TailorMadeNormativeNormInput);
+                double expectedN = failureMechanism.MacroStabilityOutwardsProbabilityAssessmentInput.GetN(
+                    failureMechanism.MacroStabilityOutwardsProbabilityAssessmentInput.SectionLength);
+                Assert.AreEqual(expectedN, calculator.TailorMadeFailureMechanismNInput);
+                Assert.AreEqual(failureMechanism.Contribution, calculator.TailorMadeFailureMechanismContributionInput);
                 mocks.VerifyAll();
             }
         }
@@ -1023,7 +1027,7 @@
 
             using (new AssemblyToolCalculatorFactoryConfig())
             {
-                var calculatorfactory = (TestAssemblyToolCalculatorFactory)AssemblyToolCalculatorFactory.Instance;
+                var calculatorfactory = (TestAssemblyToolCalculatorFactory) AssemblyToolCalculatorFactory.Instance;
                 FailureMechanismSectionAssemblyCalculatorStub calculator = calculatorfactory.LastCreatedFailureMechanismSectionAssemblyCalculator;
                 calculator.ThrowExceptionOnCalculate = true;