Index: Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Forms/Views/DuneErosionFailureMechanismResultView.cs
===================================================================
diff -u -r352b81d92f568dbe5e072a2c00b4e518ee1605d3 -r7adc47fc72205078d054034bb9d1028c32434e28
--- Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Forms/Views/DuneErosionFailureMechanismResultView.cs	(.../DuneErosionFailureMechanismResultView.cs)	(revision 352b81d92f568dbe5e072a2c00b4e518ee1605d3)
+++ Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Forms/Views/DuneErosionFailureMechanismResultView.cs	(.../DuneErosionFailureMechanismResultView.cs)	(revision 7adc47fc72205078d054034bb9d1028c32434e28)
@@ -142,5 +142,10 @@
         {
             FailureMechanismAssemblyResultControl.SetAssemblyResult(DuneErosionFailureMechanismAssemblyFactory.AssembleFailureMechanism(FailureMechanism));
         }
+
+        protected override bool HasManualAssemblyResults()
+        {
+            return DuneErosionFailureMechanismHelper.HasManualAssemblyResults(FailureMechanism);
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Forms.Test/Views/DuneErosionFailureMechanismResultViewTest.cs
===================================================================
diff -u -r6b5b4d5c4433294d5fc53dab82afdcbcefd91d41 -r7adc47fc72205078d054034bb9d1028c32434e28
--- Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Forms.Test/Views/DuneErosionFailureMechanismResultViewTest.cs	(.../DuneErosionFailureMechanismResultViewTest.cs)	(revision 6b5b4d5c4433294d5fc53dab82afdcbcefd91d41)
+++ Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Forms.Test/Views/DuneErosionFailureMechanismResultViewTest.cs	(.../DuneErosionFailureMechanismResultViewTest.cs)	(revision 7adc47fc72205078d054034bb9d1028c32434e28)
@@ -19,7 +19,10 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System.Linq;
 using System.Windows.Forms;
+using Core.Common.Util.Extensions;
+using Core.Common.Util.Reflection;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
 using Ringtoets.AssemblyTool.Forms;
@@ -167,6 +170,62 @@
             }
         }
 
+        [Test]
+        public void FailureMechanismResultView_WithFailureMechanismWithManualSectionAssemblyResults_ThenWarningSet()
+        {
+            // Setup
+            var failureMechanism = new DuneErosionFailureMechanism();
+            FailureMechanismTestHelper.AddSections(failureMechanism, 2);
+            failureMechanism.SectionResults.First().UseManualAssemblyCategoryGroup = true;
+
+            using (var form = new Form())
+            using (var view = new DuneErosionFailureMechanismResultView(failureMechanism.SectionResults,
+                                                                        failureMechanism))
+            {
+                form.Controls.Add(view);
+                form.Show();
+
+                FailureMechanismAssemblyCategoryGroupControl failureMechanismAssemblyControl = GetFailureMechanismAssemblyControl();
+                ErrorProvider warningProvider = GetWarningProvider(failureMechanismAssemblyControl);
+
+                // Call
+                string warningMessage = warningProvider.GetError(failureMechanismAssemblyControl);
+
+                // Assert
+                Assert.AreEqual("Toetsoordeel is (deels) gebaseerd op handmatig overschreven toetsoordelen.", warningMessage);
+            }
+        }
+
+        [Test]
+        public void GivenFailureMechanismResultsViewWithWarnings_WhenFailureMechanismWithoutManualSectionAssemblyResultsAndFailureMechanismNotifiesObservers_ThenWarningCleared()
+        {
+            // Given
+            var failureMechanism = new DuneErosionFailureMechanism();
+            FailureMechanismTestHelper.AddSections(failureMechanism, 2);
+            failureMechanism.SectionResults.First().UseManualAssemblyCategoryGroup = true;
+
+            using (var form = new Form())
+            using (var view = new DuneErosionFailureMechanismResultView(failureMechanism.SectionResults,
+                                                                        failureMechanism))
+            {
+                form.Controls.Add(view);
+                form.Show();
+
+                FailureMechanismAssemblyCategoryGroupControl failureMechanismAssemblyControl = GetFailureMechanismAssemblyControl();
+                ErrorProvider warningProvider = GetWarningProvider(failureMechanismAssemblyControl);
+
+                // Precondition
+                Assert.AreEqual("Toetsoordeel is (deels) gebaseerd op handmatig overschreven toetsoordelen.", warningProvider.GetError(failureMechanismAssemblyControl));
+
+                // When
+                failureMechanism.SectionResults.ForEachElementDo(sr => sr.UseManualAssemblyCategoryGroup = false);
+                failureMechanism.NotifyObservers();
+
+                // Then
+                Assert.IsEmpty(warningProvider.GetError(failureMechanismAssemblyControl));
+            }
+        }
+
         [TestFixture]
         public class DuneErosionFailureMechanismResultControlTest : FailureMechanismAssemblyCategoryGroupControlTestFixture<
             DuneErosionFailureMechanismResultView,
@@ -180,5 +239,16 @@
                                                                  failureMechanism);
             }
         }
+
+        private static FailureMechanismAssemblyCategoryGroupControl GetFailureMechanismAssemblyControl()
+        {
+            var control = (FailureMechanismAssemblyCategoryGroupControl) ((TableLayoutPanel) new ControlTester("TableLayoutPanel").TheObject).GetControlFromPosition(1, 0);
+            return control;
+        }
+
+        private static ErrorProvider GetWarningProvider(FailureMechanismAssemblyCategoryGroupControl control)
+        {
+            return TypeUtils.GetField<ErrorProvider>(control, "warningProvider");
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Forms/Views/GrassCoverErosionOutwardsFailureMechanismResultView.cs
===================================================================
diff -u -r352b81d92f568dbe5e072a2c00b4e518ee1605d3 -r7adc47fc72205078d054034bb9d1028c32434e28
--- Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Forms/Views/GrassCoverErosionOutwardsFailureMechanismResultView.cs	(.../GrassCoverErosionOutwardsFailureMechanismResultView.cs)	(revision 352b81d92f568dbe5e072a2c00b4e518ee1605d3)
+++ Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Forms/Views/GrassCoverErosionOutwardsFailureMechanismResultView.cs	(.../GrassCoverErosionOutwardsFailureMechanismResultView.cs)	(revision 7adc47fc72205078d054034bb9d1028c32434e28)
@@ -141,5 +141,10 @@
         {
             FailureMechanismAssemblyResultControl.SetAssemblyResult(GrassCoverErosionOutwardsFailureMechanismAssemblyFactory.AssembleFailureMechanism(FailureMechanism));
         }
+
+        protected override bool HasManualAssemblyResults()
+        {
+            return GrassCoverErosionOutwardsFailureMechanismHelper.HasManualAssemblyResults(FailureMechanism);
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Forms.Test/Views/GrassCoverErosionOutwardsFailureMechanismResultViewTest.cs
===================================================================
diff -u -r6b5b4d5c4433294d5fc53dab82afdcbcefd91d41 -r7adc47fc72205078d054034bb9d1028c32434e28
--- Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Forms.Test/Views/GrassCoverErosionOutwardsFailureMechanismResultViewTest.cs	(.../GrassCoverErosionOutwardsFailureMechanismResultViewTest.cs)	(revision 6b5b4d5c4433294d5fc53dab82afdcbcefd91d41)
+++ Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Forms.Test/Views/GrassCoverErosionOutwardsFailureMechanismResultViewTest.cs	(.../GrassCoverErosionOutwardsFailureMechanismResultViewTest.cs)	(revision 7adc47fc72205078d054034bb9d1028c32434e28)
@@ -19,7 +19,10 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System.Linq;
 using System.Windows.Forms;
+using Core.Common.Util.Extensions;
+using Core.Common.Util.Reflection;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
 using Ringtoets.AssemblyTool.Forms;
@@ -168,6 +171,62 @@
             }
         }
 
+        [Test]
+        public void FailureMechanismResultView_WithFailureMechanismWithManualSectionAssemblyResults_ThenWarningSet()
+        {
+            // Setup
+            var failureMechanism = new GrassCoverErosionOutwardsFailureMechanism();
+            FailureMechanismTestHelper.AddSections(failureMechanism, 2);
+            failureMechanism.SectionResults.First().UseManualAssemblyCategoryGroup = true;
+
+            using (var form = new Form())
+            using (var view = new GrassCoverErosionOutwardsFailureMechanismResultView(failureMechanism.SectionResults,
+                                                                                      failureMechanism))
+            {
+                form.Controls.Add(view);
+                form.Show();
+
+                FailureMechanismAssemblyCategoryGroupControl failureMechanismAssemblyControl = GetFailureMechanismAssemblyControl();
+                ErrorProvider warningProvider = GetWarningProvider(failureMechanismAssemblyControl);
+
+                // Call
+                string warningMessage = warningProvider.GetError(failureMechanismAssemblyControl);
+
+                // Assert
+                Assert.AreEqual("Toetsoordeel is (deels) gebaseerd op handmatig overschreven toetsoordelen.", warningMessage);
+            }
+        }
+
+        [Test]
+        public void GivenFailureMechanismResultsViewWithWarnings_WhenFailureMechanismWithoutManualSectionAssemblyResultsAndFailureMechanismNotifiesObservers_ThenWarningCleared()
+        {
+            // Given
+            var failureMechanism = new GrassCoverErosionOutwardsFailureMechanism();
+            FailureMechanismTestHelper.AddSections(failureMechanism, 2);
+            failureMechanism.SectionResults.First().UseManualAssemblyCategoryGroup = true;
+
+            using (var form = new Form())
+            using (var view = new GrassCoverErosionOutwardsFailureMechanismResultView(failureMechanism.SectionResults,
+                                                                                      failureMechanism))
+            {
+                form.Controls.Add(view);
+                form.Show();
+
+                FailureMechanismAssemblyCategoryGroupControl failureMechanismAssemblyControl = GetFailureMechanismAssemblyControl();
+                ErrorProvider warningProvider = GetWarningProvider(failureMechanismAssemblyControl);
+
+                // Precondition
+                Assert.AreEqual("Toetsoordeel is (deels) gebaseerd op handmatig overschreven toetsoordelen.", warningProvider.GetError(failureMechanismAssemblyControl));
+
+                // When
+                failureMechanism.SectionResults.ForEachElementDo(sr => sr.UseManualAssemblyCategoryGroup = false);
+                failureMechanism.NotifyObservers();
+
+                // Assert
+                Assert.IsEmpty(warningProvider.GetError(failureMechanismAssemblyControl));
+            }
+        }
+
         [TestFixture]
         public class GrassCoverErosionOutwardsFailureMechanismResultControlTest : FailureMechanismAssemblyCategoryGroupControlTestFixture<
             GrassCoverErosionOutwardsFailureMechanismResultView,
@@ -181,5 +240,16 @@
                                                                                failureMechanism);
             }
         }
+
+        private static FailureMechanismAssemblyCategoryGroupControl GetFailureMechanismAssemblyControl()
+        {
+            var control = (FailureMechanismAssemblyCategoryGroupControl) ((TableLayoutPanel) new ControlTester("TableLayoutPanel").TheObject).GetControlFromPosition(1, 0);
+            return control;
+        }
+
+        private static ErrorProvider GetWarningProvider(FailureMechanismAssemblyCategoryGroupControl control)
+        {
+            return TypeUtils.GetField<ErrorProvider>(control, "warningProvider");
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Forms/Views/StabilityStoneCoverResultView.cs
===================================================================
diff -u -r352b81d92f568dbe5e072a2c00b4e518ee1605d3 -r7adc47fc72205078d054034bb9d1028c32434e28
--- Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Forms/Views/StabilityStoneCoverResultView.cs	(.../StabilityStoneCoverResultView.cs)	(revision 352b81d92f568dbe5e072a2c00b4e518ee1605d3)
+++ Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Forms/Views/StabilityStoneCoverResultView.cs	(.../StabilityStoneCoverResultView.cs)	(revision 7adc47fc72205078d054034bb9d1028c32434e28)
@@ -140,5 +140,10 @@
         {
             FailureMechanismAssemblyResultControl.SetAssemblyResult(StabilityStoneCoverFailureMechanismAssemblyFactory.AssembleFailureMechanism(FailureMechanism));
         }
+
+        protected override bool HasManualAssemblyResults()
+        {
+            return StabilityStoneCoverFailureMechanismHelper.HasManualAssemblyResults(FailureMechanism);
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Forms.Test/Views/StabilityStoneCoverResultViewTest.cs
===================================================================
diff -u -r6b5b4d5c4433294d5fc53dab82afdcbcefd91d41 -r7adc47fc72205078d054034bb9d1028c32434e28
--- Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Forms.Test/Views/StabilityStoneCoverResultViewTest.cs	(.../StabilityStoneCoverResultViewTest.cs)	(revision 6b5b4d5c4433294d5fc53dab82afdcbcefd91d41)
+++ Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Forms.Test/Views/StabilityStoneCoverResultViewTest.cs	(.../StabilityStoneCoverResultViewTest.cs)	(revision 7adc47fc72205078d054034bb9d1028c32434e28)
@@ -19,7 +19,10 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System.Linq;
 using System.Windows.Forms;
+using Core.Common.Util.Extensions;
+using Core.Common.Util.Reflection;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
 using Ringtoets.AssemblyTool.Forms;
@@ -168,6 +171,62 @@
             }
         }
 
+        [Test]
+        public void FailureMechanismResultView_WithFailureMechanismWithManualSectionAssemblyResults_ThenWarningSet()
+        {
+            // Setup
+            var failureMechanism = new StabilityStoneCoverFailureMechanism();
+            FailureMechanismTestHelper.AddSections(failureMechanism, 2);
+            failureMechanism.SectionResults.First().UseManualAssemblyCategoryGroup = true;
+
+            using (var form = new Form())
+            using (var view = new StabilityStoneCoverResultView(failureMechanism.SectionResults,
+                                                                failureMechanism))
+            {
+                form.Controls.Add(view);
+                form.Show();
+
+                FailureMechanismAssemblyCategoryGroupControl failureMechanismAssemblyControl = GetFailureMechanismAssemblyControl();
+                ErrorProvider warningProvider = GetWarningProvider(failureMechanismAssemblyControl);
+
+                // Call
+                string warningMessage = warningProvider.GetError(failureMechanismAssemblyControl);
+
+                // Assert
+                Assert.AreEqual("Toetsoordeel is (deels) gebaseerd op handmatig overschreven toetsoordelen.", warningMessage);
+            }
+        }
+
+        [Test]
+        public void GivenFailureMechanismResultsViewWithWarnings_WhenFailureMechanismWithoutManualSectionAssemblyResultsAndFailureMechanismNotifiesObservers_ThenWarningCleared()
+        {
+            // Given
+            var failureMechanism = new StabilityStoneCoverFailureMechanism();
+            FailureMechanismTestHelper.AddSections(failureMechanism, 2);
+            failureMechanism.SectionResults.First().UseManualAssemblyCategoryGroup = true;
+
+            using (var form = new Form())
+            using (var view = new StabilityStoneCoverResultView(failureMechanism.SectionResults,
+                                                                failureMechanism))
+            {
+                form.Controls.Add(view);
+                form.Show();
+
+                FailureMechanismAssemblyCategoryGroupControl failureMechanismAssemblyControl = GetFailureMechanismAssemblyControl();
+                ErrorProvider warningProvider = GetWarningProvider(failureMechanismAssemblyControl);
+
+                // Precondition
+                Assert.AreEqual("Toetsoordeel is (deels) gebaseerd op handmatig overschreven toetsoordelen.", warningProvider.GetError(failureMechanismAssemblyControl));
+
+                // When
+                failureMechanism.SectionResults.ForEachElementDo(sr => sr.UseManualAssemblyCategoryGroup = false);
+                failureMechanism.NotifyObservers();
+
+                // Then
+                Assert.IsEmpty(warningProvider.GetError(failureMechanismAssemblyControl));
+            }
+        }
+
         [TestFixture]
         public class StabilityStoneCoverFailureMechanismResultControlTest : FailureMechanismAssemblyCategoryGroupControlTestFixture<
             StabilityStoneCoverResultView,
@@ -181,5 +240,16 @@
                                                          failureMechanism);
             }
         }
+
+        private static FailureMechanismAssemblyCategoryGroupControl GetFailureMechanismAssemblyControl()
+        {
+            var control = (FailureMechanismAssemblyCategoryGroupControl) ((TableLayoutPanel) new ControlTester("TableLayoutPanel").TheObject).GetControlFromPosition(1, 0);
+            return control;
+        }
+
+        private static ErrorProvider GetWarningProvider(FailureMechanismAssemblyCategoryGroupControl control)
+        {
+            return TypeUtils.GetField<ErrorProvider>(control, "warningProvider");
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Forms/Views/WaveImpactAsphaltCoverFailureMechanismResultView.cs
===================================================================
diff -u -r352b81d92f568dbe5e072a2c00b4e518ee1605d3 -r7adc47fc72205078d054034bb9d1028c32434e28
--- Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Forms/Views/WaveImpactAsphaltCoverFailureMechanismResultView.cs	(.../WaveImpactAsphaltCoverFailureMechanismResultView.cs)	(revision 352b81d92f568dbe5e072a2c00b4e518ee1605d3)
+++ Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Forms/Views/WaveImpactAsphaltCoverFailureMechanismResultView.cs	(.../WaveImpactAsphaltCoverFailureMechanismResultView.cs)	(revision 7adc47fc72205078d054034bb9d1028c32434e28)
@@ -141,5 +141,10 @@
         {
             FailureMechanismAssemblyResultControl.SetAssemblyResult(WaveImpactAsphaltCoverFailureMechanismAssemblyFactory.AssembleFailureMechanism(FailureMechanism));
         }
+
+        protected override bool HasManualAssemblyResults()
+        {
+            return WaveImpactAsphaltCoverFailureMechanismHelper.HasManualAssemblyResults(FailureMechanism);
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Forms.Test/Views/WaveImpactAsphaltCoverFailureMechanismResultViewTest.cs
===================================================================
diff -u -r6b5b4d5c4433294d5fc53dab82afdcbcefd91d41 -r7adc47fc72205078d054034bb9d1028c32434e28
--- Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Forms.Test/Views/WaveImpactAsphaltCoverFailureMechanismResultViewTest.cs	(.../WaveImpactAsphaltCoverFailureMechanismResultViewTest.cs)	(revision 6b5b4d5c4433294d5fc53dab82afdcbcefd91d41)
+++ Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Forms.Test/Views/WaveImpactAsphaltCoverFailureMechanismResultViewTest.cs	(.../WaveImpactAsphaltCoverFailureMechanismResultViewTest.cs)	(revision 7adc47fc72205078d054034bb9d1028c32434e28)
@@ -19,7 +19,10 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System.Linq;
 using System.Windows.Forms;
+using Core.Common.Util.Extensions;
+using Core.Common.Util.Reflection;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
 using Ringtoets.AssemblyTool.Forms;
@@ -168,6 +171,62 @@
             }
         }
 
+        [Test]
+        public void FailureMechanismResultView_WithFailureMechanismWithManualSectionAssemblyResults_ThenWarningSet()
+        {
+            // Setup
+            var failureMechanism = new WaveImpactAsphaltCoverFailureMechanism();
+            FailureMechanismTestHelper.AddSections(failureMechanism, 2);
+            failureMechanism.SectionResults.First().UseManualAssemblyCategoryGroup = true;
+
+            using (var form = new Form())
+            using (var view = new WaveImpactAsphaltCoverFailureMechanismResultView(failureMechanism.SectionResults,
+                                                                                   failureMechanism))
+            {
+                form.Controls.Add(view);
+                form.Show();
+
+                FailureMechanismAssemblyCategoryGroupControl failureMechanismAssemblyControl = GetFailureMechanismAssemblyControl();
+                ErrorProvider warningProvider = GetWarningProvider(failureMechanismAssemblyControl);
+
+                // Call
+                string warningMessage = warningProvider.GetError(failureMechanismAssemblyControl);
+
+                // Assert
+                Assert.AreEqual("Toetsoordeel is (deels) gebaseerd op handmatig overschreven toetsoordelen.", warningMessage);
+            }
+        }
+
+        [Test]
+        public void GivenFailureMechanismResultsViewWithWarnings_WhenFailureMechanismWithoutManualSectionAssemblyResultsAndFailureMechanismNotifiesObservers_ThenWarningCleared()
+        {
+            // Given
+            var failureMechanism = new WaveImpactAsphaltCoverFailureMechanism();
+            FailureMechanismTestHelper.AddSections(failureMechanism, 2);
+            failureMechanism.SectionResults.First().UseManualAssemblyCategoryGroup = true;
+
+            using (var form = new Form())
+            using (var view = new WaveImpactAsphaltCoverFailureMechanismResultView(failureMechanism.SectionResults,
+                                                                                   failureMechanism))
+            {
+                form.Controls.Add(view);
+                form.Show();
+
+                FailureMechanismAssemblyCategoryGroupControl failureMechanismAssemblyControl = GetFailureMechanismAssemblyControl();
+                ErrorProvider warningProvider = GetWarningProvider(failureMechanismAssemblyControl);
+
+                // Precondition
+                Assert.AreEqual("Toetsoordeel is (deels) gebaseerd op handmatig overschreven toetsoordelen.", warningProvider.GetError(failureMechanismAssemblyControl));
+
+                // When
+                failureMechanism.SectionResults.ForEachElementDo(sr => sr.UseManualAssemblyCategoryGroup = false);
+                failureMechanism.NotifyObservers();
+
+                // Then
+                Assert.IsEmpty(warningProvider.GetError(failureMechanismAssemblyControl));
+            }
+        }
+
         [TestFixture]
         public class WaveImpactAsphaltCoverFailureMechanismResultControlTest : FailureMechanismAssemblyCategoryGroupControlTestFixture<
             WaveImpactAsphaltCoverFailureMechanismResultView,
@@ -181,5 +240,16 @@
                                                                             failureMechanism);
             }
         }
+
+        private static FailureMechanismAssemblyCategoryGroupControl GetFailureMechanismAssemblyControl()
+        {
+            var control = (FailureMechanismAssemblyCategoryGroupControl) ((TableLayoutPanel) new ControlTester("TableLayoutPanel").TheObject).GetControlFromPosition(1, 0);
+            return control;
+        }
+
+        private static ErrorProvider GetWarningProvider(FailureMechanismAssemblyCategoryGroupControl control)
+        {
+            return TypeUtils.GetField<ErrorProvider>(control, "warningProvider");
+        }
     }
 }
\ No newline at end of file