Index: Ringtoets/Integration/src/Ringtoets.Integration.IO/Exporters/AssemblyExporter.cs
===================================================================
diff -u -ra71b1ceb1838d97cabf3abad83710ce49f9dced9 -r1278f5e294a4dd194391fbcfe91f54546e20e1de
--- Ringtoets/Integration/src/Ringtoets.Integration.IO/Exporters/AssemblyExporter.cs	(.../AssemblyExporter.cs)	(revision a71b1ceb1838d97cabf3abad83710ce49f9dced9)
+++ Ringtoets/Integration/src/Ringtoets.Integration.IO/Exporters/AssemblyExporter.cs	(.../AssemblyExporter.cs)	(revision 1278f5e294a4dd194391fbcfe91f54546e20e1de)
@@ -28,6 +28,7 @@
 using Ringtoets.AssemblyTool.IO;
 using Ringtoets.Common.Data.Exceptions;
 using Ringtoets.Integration.Data;
+using Ringtoets.Integration.Data.Assembly;
 using Ringtoets.Integration.IO.Assembly;
 using Ringtoets.Integration.IO.Creators;
 using Ringtoets.Integration.IO.Exceptions;
@@ -67,6 +68,8 @@
 
         public bool Export()
         {
+            CheckManualAssembly();
+
             ExportableAssessmentSection exportableAssessmentSection = CreateExportableAssessmentSection();
             if (!ValidateExportableAssessmentSection(exportableAssessmentSection))
             {
@@ -93,6 +96,14 @@
             return true;
         }
 
+        private void CheckManualAssembly()
+        {
+            if (AssessmentSectionHelper.HasManualAssemblyResults(assessmentSection))
+            {
+                log.Warn(Resources.AssemblyExporter_CheckManualAssembly_Assembly_result_contains_manual_results_exporter_will_ignore_manual_results);
+            }
+        }
+
         private ExportableAssessmentSection CreateExportableAssessmentSection()
         {
             try
Index: Ringtoets/Integration/src/Ringtoets.Integration.IO/Properties/Resources.Designer.cs
===================================================================
diff -u -r4d38df69c95e64608027c29e7259bfaf4a068727 -r1278f5e294a4dd194391fbcfe91f54546e20e1de
--- Ringtoets/Integration/src/Ringtoets.Integration.IO/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 4d38df69c95e64608027c29e7259bfaf4a068727)
+++ Ringtoets/Integration/src/Ringtoets.Integration.IO/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 1278f5e294a4dd194391fbcfe91f54546e20e1de)
@@ -82,6 +82,16 @@
         }
         
         /// <summary>
+        ///   Looks up a localized string similar to Veiligheidsoordeel is (deels) gebaseerd op handmatig ingevoerde toetsoordelen. Tijdens het exporteren worden handmatig ingevoerde toetsoordelen genegeerd..
+        /// </summary>
+        internal static string AssemblyExporter_CheckManualAssembly_Assembly_result_contains_manual_results_exporter_will_ignore_manual_results {
+            get {
+                return ResourceManager.GetString("AssemblyExporter_CheckManualAssembly_Assembly_result_contains_manual_results_expo" +
+                        "rter_will_ignore_manual_results", resourceCulture);
+            }
+        }
+        
+        /// <summary>
         ///   Looks up a localized string similar to {0} Er is geen toetsoordeel geëxporteerd..
         /// </summary>
         internal static string AssemblyExporter_Error_Exception_0_no_AssemblyResult_exported {
Index: Ringtoets/Integration/src/Ringtoets.Integration.IO/Properties/Resources.resx
===================================================================
diff -u -r4d38df69c95e64608027c29e7259bfaf4a068727 -r1278f5e294a4dd194391fbcfe91f54546e20e1de
--- Ringtoets/Integration/src/Ringtoets.Integration.IO/Properties/Resources.resx	(.../Resources.resx)	(revision 4d38df69c95e64608027c29e7259bfaf4a068727)
+++ Ringtoets/Integration/src/Ringtoets.Integration.IO/Properties/Resources.resx	(.../Resources.resx)	(revision 1278f5e294a4dd194391fbcfe91f54546e20e1de)
@@ -150,4 +150,7 @@
   <data name="AssemblyExporter_LogErrorMessage_Only_possible_to_export_a_complete_AssemblyResult" xml:space="preserve">
     <value>Het is alleen mogelijk een volledig toetsoordeel te exporteren.</value>
   </data>
+  <data name="AssemblyExporter_CheckManualAssembly_Assembly_result_contains_manual_results_exporter_will_ignore_manual_results" xml:space="preserve">
+    <value>Veiligheidsoordeel is (deels) gebaseerd op handmatig ingevoerde toetsoordelen. Tijdens het exporteren worden handmatig ingevoerde toetsoordelen genegeerd.</value>
+  </data>
 </root>
\ No newline at end of file
Index: Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Exporters/AssemblyExporterTest.cs
===================================================================
diff -u -r8f5763187cbd04a1dd8261d2bea61a082840789c -r1278f5e294a4dd194391fbcfe91f54546e20e1de
--- Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Exporters/AssemblyExporterTest.cs	(.../AssemblyExporterTest.cs)	(revision 8f5763187cbd04a1dd8261d2bea61a082840789c)
+++ Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Exporters/AssemblyExporterTest.cs	(.../AssemblyExporterTest.cs)	(revision 1278f5e294a4dd194391fbcfe91f54546e20e1de)
@@ -21,6 +21,7 @@
 
 using System;
 using System.IO;
+using System.Linq;
 using Core.Common.Base.Geometry;
 using Core.Common.Base.IO;
 using Core.Common.TestUtil;
@@ -138,16 +139,37 @@
         }
 
         [Test]
-        public void Export_AssemblyCreateorExceptionThrown_LogsErrorAndReturnsFalse()
+        public void Export_WithManualAssemblyResult_LogsWarning()
         {
             // Setup
             string filePath = TestHelper.GetScratchPadPath(nameof(Export_InvalidAssessmentSectionCategoryGroupResults_LogsErrorAndReturnsFalse));
             AssessmentSection assessmentSection = CreateConfiguredAssessmentSection();
+            assessmentSection.Piping.SectionResults.First().UseManualAssemblyProbability = true;
 
             var exporter = new AssemblyExporter(assessmentSection, filePath);
 
             using (new AssemblyToolCalculatorFactoryConfig())
             {
+                // Call
+                Action call = () => exporter.Export();
+
+                // Assert
+                const string expectedMessage = "Veiligheidsoordeel is (deels) gebaseerd op handmatig ingevoerde toetsoordelen. Tijdens het exporteren worden handmatig ingevoerde toetsoordelen genegeerd.";
+                TestHelper.AssertLogMessageWithLevelIsGenerated(call, new Tuple<string, LogLevelConstant>(expectedMessage, LogLevelConstant.Warn));
+            }
+        }
+
+        [Test]
+        public void Export_AssemblyCreatorExceptionThrown_LogsErrorAndReturnsFalse()
+        {
+            // Setup
+            string filePath = TestHelper.GetScratchPadPath(nameof(Export_InvalidAssessmentSectionCategoryGroupResults_LogsErrorAndReturnsFalse));
+            AssessmentSection assessmentSection = CreateConfiguredAssessmentSection();
+
+            var exporter = new AssemblyExporter(assessmentSection, filePath);
+
+            using (new AssemblyToolCalculatorFactoryConfig())
+            {
                 var calculatorFactory = (TestAssemblyToolCalculatorFactory) AssemblyToolCalculatorFactory.Instance;
                 FailureMechanismSectionAssemblyCalculatorStub failureMechanismSectionAssemblyCalculator = calculatorFactory.LastCreatedFailureMechanismSectionAssemblyCalculator;
                 failureMechanismSectionAssemblyCalculator.CombinedAssemblyCategoryOutput = FailureMechanismSectionAssemblyCategoryGroup.None;
@@ -194,10 +216,10 @@
         }
 
         [Test]
-        public void Export_InvalidDirectorRights_LogsErrorAndReturnsFalse()
+        public void Export_InvalidDirectoryRights_LogsErrorAndReturnsFalse()
         {
             // Setup
-            string filePath = TestHelper.GetScratchPadPath(nameof(Export_InvalidDirectorRights_LogsErrorAndReturnsFalse));
+            string filePath = TestHelper.GetScratchPadPath(nameof(Export_InvalidDirectoryRights_LogsErrorAndReturnsFalse));
             AssessmentSection assessmentSection = CreateConfiguredAssessmentSection();
 
             var exporter = new AssemblyExporter(assessmentSection, filePath);