Index: Ringtoets/Integration/src/Ringtoets.Integration.IO/Creators/AggregatedSerializableFailureMechanismCreator.cs
===================================================================
diff -u -ra71b1ceb1838d97cabf3abad83710ce49f9dced9 -r8d91ecbc49d0293111c03893d1751283e5360039
--- Ringtoets/Integration/src/Ringtoets.Integration.IO/Creators/AggregatedSerializableFailureMechanismCreator.cs	(.../AggregatedSerializableFailureMechanismCreator.cs)	(revision a71b1ceb1838d97cabf3abad83710ce49f9dced9)
+++ Ringtoets/Integration/src/Ringtoets.Integration.IO/Creators/AggregatedSerializableFailureMechanismCreator.cs	(.../AggregatedSerializableFailureMechanismCreator.cs)	(revision 8d91ecbc49d0293111c03893d1751283e5360039)
@@ -21,6 +21,7 @@
 
 using System;
 using System.Linq;
+using Ringtoets.AssemblyTool.Data;
 using Ringtoets.AssemblyTool.IO.Model;
 using Ringtoets.Integration.IO.AggregatedSerializable;
 using Ringtoets.Integration.IO.Assembly;
@@ -46,7 +47,7 @@
         /// <exception cref="ArgumentNullException">Thrown when any parameter is <c>null</c>.</exception>
         /// <exception cref="AssemblyCreatorException">Thrown when the assembly result cannot be created.</exception>
         /// <exception cref="NotSupportedException">Thrown when the <see cref="ExportableFailureMechanism{TFailureMechanismAssemblyResult}"/>
-        /// contains unsupported items in the failure mechanism section assembly results.</exception>
+        /// contains unsupported items in the failure mechanism (section) assembly results.</exception>
         public static AggregatedSerializableFailureMechanism Create(IdentifierGenerator idGenerator,
                                                                     SerializableTotalAssemblyResult serializableTotalAssemblyResult,
                                                                     ExportableFailureMechanism<ExportableFailureMechanismAssemblyResult> failureMechanism)
@@ -66,6 +67,8 @@
                 throw new ArgumentNullException(nameof(failureMechanism));
             }
 
+            ValidateFailureMechanismAssemblyResult(failureMechanism.FailureMechanismAssembly);
+
             SerializableFailureMechanism serializableFailureMechanism = SerializableFailureMechanismCreator.Create(idGenerator, serializableTotalAssemblyResult, failureMechanism);
             var serializableCollection = new SerializableFailureMechanismSectionCollection(idGenerator.GetNewId(Resources.SerializableFailureMechanismSectionCollection_IdPrefix));
 
@@ -94,7 +97,7 @@
         /// <exception cref="ArgumentNullException">Thrown when any parameter is <c>null</c>.</exception>
         /// <exception cref="AssemblyCreatorException">Thrown when the assembly result cannot be created.</exception>
         /// <exception cref="NotSupportedException">Thrown when the <see cref="ExportableFailureMechanism{TFailureMechanismAssemblyResult}"/>
-        /// contains unsupported items in the failure mechanism section assembly results.</exception>
+        /// contains unsupported items in the failure mechanism (section) assembly results.</exception>
         public static AggregatedSerializableFailureMechanism Create(IdentifierGenerator idGenerator,
                                                                     SerializableTotalAssemblyResult serializableTotalAssemblyResult,
                                                                     ExportableFailureMechanism<ExportableFailureMechanismAssemblyResultWithProbability> failureMechanism)
@@ -114,6 +117,8 @@
                 throw new ArgumentNullException(nameof(failureMechanism));
             }
 
+            ValidateFailureMechanismAssemblyResult(failureMechanism.FailureMechanismAssembly);
+
             SerializableFailureMechanism serializableFailureMechanism = SerializableFailureMechanismCreator.Create(idGenerator, serializableTotalAssemblyResult, failureMechanism);
             var serializableCollection = new SerializableFailureMechanismSectionCollection(idGenerator.GetNewId(Resources.SerializableFailureMechanismSectionCollection_IdPrefix));
 
@@ -131,7 +136,22 @@
                                                               serializableFailureMechanismSectionAssemblyResults.Select(fmr => fmr.FailureMechanismSectionAssembly));
         }
 
+
         /// <summary>
+        /// Validates whether an <see cref="ExportableFailureMechanismAssemblyResult"/> is valid to be created.
+        /// </summary>
+        /// <param name="assemblyResult">The <see cref="ExportableFailureMechanismAssemblyResult"/> to validate.</param>
+        /// <exception cref="AssemblyCreatorException">Thrown when <paramref name="assemblyResult"/>
+        /// is invalid to create.</exception>
+        private static void ValidateFailureMechanismAssemblyResult(ExportableFailureMechanismAssemblyResult assemblyResult)
+        {
+            if (assemblyResult.AssemblyCategory == FailureMechanismAssemblyCategoryGroup.None)
+            {
+                throw new AssemblyCreatorException(@"The assembly result is invalid and cannot be created.");
+            }
+        }
+
+        /// <summary>
         /// Creates an instance of <see cref="AggregatedSerializableFailureMechanismSectionAssembly"/> based on its input parameters.
         /// </summary>
         /// <param name="idGenerator">The id generator to generate the id for the serializable components.</param>
Index: Ringtoets/Integration/src/Ringtoets.Integration.IO/Creators/AggregatedSerializableFailureMechanismSectionAssemblyCreator.cs
===================================================================
diff -u -ra71b1ceb1838d97cabf3abad83710ce49f9dced9 -r8d91ecbc49d0293111c03893d1751283e5360039
--- Ringtoets/Integration/src/Ringtoets.Integration.IO/Creators/AggregatedSerializableFailureMechanismSectionAssemblyCreator.cs	(.../AggregatedSerializableFailureMechanismSectionAssemblyCreator.cs)	(revision a71b1ceb1838d97cabf3abad83710ce49f9dced9)
+++ Ringtoets/Integration/src/Ringtoets.Integration.IO/Creators/AggregatedSerializableFailureMechanismSectionAssemblyCreator.cs	(.../AggregatedSerializableFailureMechanismSectionAssemblyCreator.cs)	(revision 8d91ecbc49d0293111c03893d1751283e5360039)
@@ -198,7 +198,7 @@
         }
 
         /// <summary>
-        /// Validates whether an <see cref="ExportableSectionAssemblyResult"/> is valid to export.
+        /// Validates whether an <see cref="ExportableSectionAssemblyResult"/> is valid to be created.
         /// </summary>
         /// <param name="result">The <see cref="ExportableSectionAssemblyResult"/> to validate.</param>
         /// <exception cref="AssemblyCreatorException">Thrown when <paramref name="result"/>
Index: Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Creators/AggregatedSerializableFailureMechanismCreatorTest.cs
===================================================================
diff -u -rc2889f9bc178f329da2719bf6655334835720c01 -r8d91ecbc49d0293111c03893d1751283e5360039
--- Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Creators/AggregatedSerializableFailureMechanismCreatorTest.cs	(.../AggregatedSerializableFailureMechanismCreatorTest.cs)	(revision c2889f9bc178f329da2719bf6655334835720c01)
+++ Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Creators/AggregatedSerializableFailureMechanismCreatorTest.cs	(.../AggregatedSerializableFailureMechanismCreatorTest.cs)	(revision 8d91ecbc49d0293111c03893d1751283e5360039)
@@ -32,6 +32,7 @@
 using Ringtoets.Integration.IO.AggregatedSerializable;
 using Ringtoets.Integration.IO.Assembly;
 using Ringtoets.Integration.IO.Creators;
+using Ringtoets.Integration.IO.Exceptions;
 using Ringtoets.Integration.IO.Helpers;
 using Ringtoets.Integration.IO.TestUtil;
 
@@ -121,6 +122,28 @@
         }
 
         [Test]
+        public void CreateFailureMechanismWithoutProbability_FailureMechanismAssemblyResultNone_ThrowsAssemblyCreatorException()
+        {
+            // Setup
+            var random = new Random(21);
+            var failureMechanism = new ExportableFailureMechanism<ExportableFailureMechanismAssemblyResult>(
+                new ExportableFailureMechanismAssemblyResult(random.NextEnumValue<ExportableAssemblyMethod>(),
+                                                             FailureMechanismAssemblyCategoryGroup.None),
+                Enumerable.Empty<ExportableAggregatedFailureMechanismSectionAssemblyResultBase>(),
+                random.NextEnumValue<ExportableFailureMechanismType>(),
+                random.NextEnumValue<ExportableFailureMechanismGroup>());
+
+            // Call
+            TestDelegate call = () => AggregatedSerializableFailureMechanismCreator.Create(new IdentifierGenerator(),
+                                                                                           new SerializableTotalAssemblyResult(),
+                                                                                           failureMechanism);
+
+            // Assert
+            var exception = Assert.Throws<AssemblyCreatorException>(call);
+            Assert.AreEqual("The assembly result is invalid and cannot be created.", exception.Message);
+        }
+
+        [Test]
         [TestCaseSource(nameof(GetSectionAssemblyConfigurations))]
         public void CreateFailureMechanismWithoutProbabilityAndSectionAssemblyResultsWithProbability_WithValidArguments_ReturnsAggregatedSerializableFailureMechanism(
             IEnumerable<ExportableFailureMechanismSection> failureMechanismSections,
@@ -246,6 +269,29 @@
         }
 
         [Test]
+        public void CreateFailureMechanismWithProbability_FailureMechanismAssemblyResultNone_ThrowsAssemblyCreatorException()
+        {
+            // Setup
+            var random = new Random(21);
+            var failureMechanism = new ExportableFailureMechanism<ExportableFailureMechanismAssemblyResultWithProbability>(
+                new ExportableFailureMechanismAssemblyResultWithProbability(random.NextEnumValue<ExportableAssemblyMethod>(),
+                                                                            FailureMechanismAssemblyCategoryGroup.None,
+                                                                            random.NextDouble()),
+                Enumerable.Empty<ExportableAggregatedFailureMechanismSectionAssemblyResultBase>(),
+                random.NextEnumValue<ExportableFailureMechanismType>(),
+                random.NextEnumValue<ExportableFailureMechanismGroup>());
+
+            // Call
+            TestDelegate call = () => AggregatedSerializableFailureMechanismCreator.Create(new IdentifierGenerator(),
+                                                                                           new SerializableTotalAssemblyResult(),
+                                                                                           failureMechanism);
+
+            // Assert
+            var exception = Assert.Throws<AssemblyCreatorException>(call);
+            Assert.AreEqual("The assembly result is invalid and cannot be created.", exception.Message);
+        }
+
+        [Test]
         [TestCaseSource(nameof(GetSectionAssemblyConfigurations))]
         public void CreateFailureMechanismWithProbabilityAndSectionAssemblyResultsWithProbability_WithValidArguments_ReturnsAggregatedSerializableFailureMechanism(
             IEnumerable<ExportableFailureMechanismSection> failureMechanismSections,