Index: Riskeer/Integration/src/Riskeer.Integration.IO/Factories/ExportableCombinedSectionAssemblyFactory.cs
===================================================================
diff -u -r6987efa7ae64f10c5c00802ca6b3ba0c08cd5ab7 -r8207feaf9b12bc87b924cde143f7af6a8eac0f0b
--- Riskeer/Integration/src/Riskeer.Integration.IO/Factories/ExportableCombinedSectionAssemblyFactory.cs	(.../ExportableCombinedSectionAssemblyFactory.cs)	(revision 6987efa7ae64f10c5c00802ca6b3ba0c08cd5ab7)
+++ Riskeer/Integration/src/Riskeer.Integration.IO/Factories/ExportableCombinedSectionAssemblyFactory.cs	(.../ExportableCombinedSectionAssemblyFactory.cs)	(revision 8207feaf9b12bc87b924cde143f7af6a8eac0f0b)
@@ -29,6 +29,7 @@
 using Riskeer.Common.Data.FailureMechanism;
 using Riskeer.Integration.Data;
 using Riskeer.Integration.Data.Assembly;
+using Riskeer.Integration.IO.Exceptions;
 using Riskeer.Integration.Util;
 
 namespace Riskeer.Integration.IO.Factories
@@ -47,6 +48,8 @@
         /// <param name="assessmentSection">The <see cref="AssessmentSection"/> the section results belong to.</param>
         /// <returns>A collection of <see cref="ExportableCombinedSectionAssembly"/>.</returns>
         /// <exception cref="ArgumentNullException">Thrown when any parameter is <c>null</c>.</exception>
+        /// <exception cref="AssemblyFactoryException">Thrown when <see cref="CombinedFailureMechanismSectionAssemblyResult.TotalResult"/>
+        /// is invalid and cannot be exported.</exception>
         public static IEnumerable<ExportableCombinedSectionAssembly> CreateExportableCombinedSectionAssemblyCollection(
             IEnumerable<CombinedFailureMechanismSectionAssemblyResult> combinedSectionAssemblyResults,
             AssessmentSection assessmentSection)
@@ -64,6 +67,12 @@
             var sectionResults = new List<ExportableCombinedSectionAssembly>();
             foreach (CombinedFailureMechanismSectionAssemblyResult assemblyResult in combinedSectionAssemblyResults)
             {
+                if (assemblyResult.TotalResult == FailureMechanismSectionAssemblyGroup.NoResult
+                    || assemblyResult.TotalResult == FailureMechanismSectionAssemblyGroup.Dominant)
+                {
+                    throw new AssemblyFactoryException("The assembly result is invalid and cannot be created.");
+                }
+                
                 var exportableSection = new ExportableCombinedFailureMechanismSection(
                     "id", FailureMechanismSectionHelper.GetFailureMechanismSectionGeometry(
                         assessmentSection.ReferenceLine, assemblyResult.SectionStart, assemblyResult.SectionEnd),
Index: Riskeer/Integration/test/Riskeer.Integration.IO.Test/Factories/ExportableCombinedSectionAssemblyFactoryTest.cs
===================================================================
diff -u -r6987efa7ae64f10c5c00802ca6b3ba0c08cd5ab7 -r8207feaf9b12bc87b924cde143f7af6a8eac0f0b
--- Riskeer/Integration/test/Riskeer.Integration.IO.Test/Factories/ExportableCombinedSectionAssemblyFactoryTest.cs	(.../ExportableCombinedSectionAssemblyFactoryTest.cs)	(revision 6987efa7ae64f10c5c00802ca6b3ba0c08cd5ab7)
+++ Riskeer/Integration/test/Riskeer.Integration.IO.Test/Factories/ExportableCombinedSectionAssemblyFactoryTest.cs	(.../ExportableCombinedSectionAssemblyFactoryTest.cs)	(revision 8207feaf9b12bc87b924cde143f7af6a8eac0f0b)
@@ -32,6 +32,7 @@
 using Riskeer.Common.Data.FailureMechanism;
 using Riskeer.Integration.Data;
 using Riskeer.Integration.Data.Assembly;
+using Riskeer.Integration.IO.Exceptions;
 using Riskeer.Integration.IO.Factories;
 using Riskeer.Integration.Util;
 
@@ -65,6 +66,31 @@
         }
 
         [Test]
+        [TestCase(FailureMechanismSectionAssemblyGroup.NoResult)]
+        [TestCase(FailureMechanismSectionAssemblyGroup.Dominant)]
+        public void CreateExportableCombinedSectionAssemblyCollection_WithInvalidAssemblyResults_ThrowsAssemblyFactoryException(
+            FailureMechanismSectionAssemblyGroup assemblyGroup)
+        {
+            // Setup
+            var assessmentSection = new AssessmentSection(AssessmentSectionComposition.Dike);
+
+            var random = new Random(21);
+            CombinedFailureMechanismSectionAssemblyResult[] assemblyResults =
+            {
+                new CombinedFailureMechanismSectionAssemblyResult(random.NextDouble(), random.NextDouble(), assemblyGroup,
+                random.NextEnumValue<AssemblyMethod>(), random.NextEnumValue<AssemblyMethod>(), random.NextEnumValue<AssemblyMethod>(),
+                new CombinedFailureMechanismSectionAssemblyResult.ConstructionProperties())
+            };
+
+            // Call
+            void Call() => ExportableCombinedSectionAssemblyFactory.CreateExportableCombinedSectionAssemblyCollection(assemblyResults, assessmentSection);
+
+            // Assert
+            var exception = Assert.Throws<AssemblyFactoryException>(Call);
+            Assert.AreEqual("The assembly result is invalid and cannot be created.", exception.Message);
+        }
+
+        [Test]
         [TestCase(true)]
         [TestCase(false)]
         public void CreateExportableCombinedSectionAssemblyCollection_WithAssemblyResults_ReturnsExportableCombinedSectionAssemblyCollection(bool hasAssemblyGroupResults)