Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanism.cs
===================================================================
diff -u -r42c710f0341da1ca4fc911ef8ba502a41073e400 -r64403dc5e4445012c07ed7fe2ab44b2149b44d1b
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanism.cs	(.../PipingFailureMechanism.cs)	(revision 42c710f0341da1ca4fc911ef8ba502a41073e400)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanism.cs	(.../PipingFailureMechanism.cs)	(revision 64403dc5e4445012c07ed7fe2ab44b2149b44d1b)
@@ -40,7 +40,7 @@
         /// Initializes a new instance of the <see cref="PipingFailureMechanism"/> class.
         /// </summary>
         public PipingFailureMechanism()
-            : base(PipingDataResources.PipingFailureMechanism_DisplayName, PipingDataResources.PipingFailureMechanism_DisplayCode)
+            : base(PipingDataResources.PipingFailureMechanism_DisplayName, PipingDataResources.PipingFailureMechanism_DisplayCode, 2)
         {
             PipingProbabilityAssessmentInput = new PipingProbabilityAssessmentInput();
             GeneralInput = new GeneralPipingInput();
Index: Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingFailureMechanismTest.cs
===================================================================
diff -u -rfc8446fc65eb82bb381278d8a94fd061e6278bbe -r64403dc5e4445012c07ed7fe2ab44b2149b44d1b
--- Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingFailureMechanismTest.cs	(.../PipingFailureMechanismTest.cs)	(revision fc8446fc65eb82bb381278d8a94fd061e6278bbe)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingFailureMechanismTest.cs	(.../PipingFailureMechanismTest.cs)	(revision 64403dc5e4445012c07ed7fe2ab44b2149b44d1b)
@@ -43,6 +43,7 @@
             Assert.IsInstanceOf<IHasSectionResults<PipingFailureMechanismSectionResult>>(failureMechanism);
             Assert.AreEqual("Dijken en dammen - Piping", failureMechanism.Name);
             Assert.AreEqual("STPH", failureMechanism.Code);
+            Assert.AreEqual(2, failureMechanism.AssemblyGroup);
 
             Assert.IsNotNull(failureMechanism.GeneralInput);
             Assert.IsNotNull(failureMechanism.PipingProbabilityAssessmentInput);