Index: Ringtoets/Common/src/Ringtoets.Common.Forms/Controls/FailureMechanismAssemblyResultControl.Designer.cs
===================================================================
diff -u -r9c341ce32f55de21dcc7ab33717e1750c437fb0e -re066f6fce8df4604082ede0fcd13921a8d66c560
--- Ringtoets/Common/src/Ringtoets.Common.Forms/Controls/FailureMechanismAssemblyResultControl.Designer.cs	(.../FailureMechanismAssemblyResultControl.Designer.cs)	(revision 9c341ce32f55de21dcc7ab33717e1750c437fb0e)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/Controls/FailureMechanismAssemblyResultControl.Designer.cs	(.../FailureMechanismAssemblyResultControl.Designer.cs)	(revision e066f6fce8df4604082ede0fcd13921a8d66c560)
@@ -51,11 +51,14 @@
         /// </summary>
         private void InitializeComponent()
         {
+            this.components = new System.ComponentModel.Container();
             System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(FailureMechanismAssemblyResultControl));
             this.GroupPanel = new System.Windows.Forms.TableLayoutPanel();
             this.description = new System.Windows.Forms.Label();
             this.GroupLabel = new Ringtoets.Common.Forms.Controls.BoxedLabel();
+            this.ErrorProvider = new System.Windows.Forms.ErrorProvider(this.components);
             this.GroupPanel.SuspendLayout();
+            ((System.ComponentModel.ISupportInitialize)(this.ErrorProvider)).BeginInit();
             this.SuspendLayout();
             // 
             // GroupPanel
@@ -76,6 +79,11 @@
             this.GroupLabel.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
             this.GroupLabel.Name = "GroupLabel";
             // 
+            // ErrorProvider
+            // 
+            this.ErrorProvider.ContainerControl = this;
+            this.ErrorProvider.Icon = global::Ringtoets.Common.Forms.Properties.Resources.ErrorIcon;
+            // 
             // FailureMechanismAssemblyResultControl
             // 
             resources.ApplyResources(this, "$this");
@@ -84,14 +92,16 @@
             this.Name = "FailureMechanismAssemblyResultControl";
             this.GroupPanel.ResumeLayout(false);
             this.GroupPanel.PerformLayout();
+            ((System.ComponentModel.ISupportInitialize)(this.ErrorProvider)).EndInit();
             this.ResumeLayout(false);
             this.PerformLayout();
 
         }
 
         #endregion
-        public BoxedLabel GroupLabel;
         private System.Windows.Forms.Label description;
         protected System.Windows.Forms.TableLayoutPanel GroupPanel;
+        protected BoxedLabel GroupLabel;
+        protected System.Windows.Forms.ErrorProvider ErrorProvider;
     }
 }
Index: Ringtoets/Common/src/Ringtoets.Common.Forms/Controls/FailureMechanismAssemblyResultControl.cs
===================================================================
diff -u -r9c341ce32f55de21dcc7ab33717e1750c437fb0e -re066f6fce8df4604082ede0fcd13921a8d66c560
--- Ringtoets/Common/src/Ringtoets.Common.Forms/Controls/FailureMechanismAssemblyResultControl.cs	(.../FailureMechanismAssemblyResultControl.cs)	(revision 9c341ce32f55de21dcc7ab33717e1750c437fb0e)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/Controls/FailureMechanismAssemblyResultControl.cs	(.../FailureMechanismAssemblyResultControl.cs)	(revision e066f6fce8df4604082ede0fcd13921a8d66c560)
@@ -19,6 +19,7 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using System.Windows.Forms;
 
 namespace Ringtoets.Common.Forms.Controls
@@ -35,5 +36,20 @@
         {
             InitializeComponent();
         }
+
+        public void ClearError()
+        {
+            ErrorProvider.SetError(this, string.Empty);
+        }
+
+        public void SetError(string error)
+        {
+            if (error == null)
+            {
+                throw new ArgumentNullException(nameof(error));
+            }
+
+            ErrorProvider.SetError(this, error);
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Common/src/Ringtoets.Common.Forms/Controls/FailureMechanismAssemblyResultControl.resx
===================================================================
diff -u -r9c341ce32f55de21dcc7ab33717e1750c437fb0e -re066f6fce8df4604082ede0fcd13921a8d66c560
--- Ringtoets/Common/src/Ringtoets.Common.Forms/Controls/FailureMechanismAssemblyResultControl.resx	(.../FailureMechanismAssemblyResultControl.resx)	(revision 9c341ce32f55de21dcc7ab33717e1750c437fb0e)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/Controls/FailureMechanismAssemblyResultControl.resx	(.../FailureMechanismAssemblyResultControl.resx)	(revision e066f6fce8df4604082ede0fcd13921a8d66c560)
@@ -234,6 +234,9 @@
   <data name="GroupPanel.LayoutSettings" type="System.Windows.Forms.TableLayoutSettings, System.Windows.Forms">
     <value>&lt;?xml version="1.0" encoding="utf-16"?&gt;&lt;TableLayoutSettings&gt;&lt;Controls&gt;&lt;Control Name="description" Row="0" RowSpan="1" Column="0" ColumnSpan="1" /&gt;&lt;Control Name="GroupLabel" Row="0" RowSpan="1" Column="1" ColumnSpan="1" /&gt;&lt;/Controls&gt;&lt;Columns Styles="AutoSize,0,AutoSize,0" /&gt;&lt;Rows Styles="Percent,100" /&gt;&lt;/TableLayoutSettings&gt;</value>
   </data>
+  <metadata name="ErrorProvider.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+    <value>17, 17</value>
+  </metadata>
   <metadata name="$this.Localizable" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
     <value>True</value>
   </metadata>
@@ -246,6 +249,12 @@
   <data name="$this.Size" type="System.Drawing.Size, System.Drawing">
     <value>274, 150</value>
   </data>
+  <data name="&gt;&gt;ErrorProvider.Name" xml:space="preserve">
+    <value>ErrorProvider</value>
+  </data>
+  <data name="&gt;&gt;ErrorProvider.Type" xml:space="preserve">
+    <value>System.Windows.Forms.ErrorProvider, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </data>
   <data name="&gt;&gt;$this.Name" xml:space="preserve">
     <value>FailureMechanismAssemblyResultControl</value>
   </data>
Index: Ringtoets/Common/test/Ringtoets.Common.Forms.Test/Controls/FailureMechanismAssemblyResultControlTest.cs
===================================================================
diff -u -r9c341ce32f55de21dcc7ab33717e1750c437fb0e -re066f6fce8df4604082ede0fcd13921a8d66c560
--- Ringtoets/Common/test/Ringtoets.Common.Forms.Test/Controls/FailureMechanismAssemblyResultControlTest.cs	(.../FailureMechanismAssemblyResultControlTest.cs)	(revision 9c341ce32f55de21dcc7ab33717e1750c437fb0e)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.Test/Controls/FailureMechanismAssemblyResultControlTest.cs	(.../FailureMechanismAssemblyResultControlTest.cs)	(revision e066f6fce8df4604082ede0fcd13921a8d66c560)
@@ -19,11 +19,14 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using System.Drawing;
 using System.Windows.Forms;
+using Core.Common.TestUtil;
 using Core.Common.Util.Reflection;
 using NUnit.Framework;
 using Ringtoets.Common.Forms.Controls;
+using Ringtoets.Common.Forms.Properties;
 
 namespace Ringtoets.Common.Forms.Test.Controls
 {
@@ -37,18 +40,75 @@
             var resultControl = new FailureMechanismAssemblyResultControl();
 
             // Assert
+            Assert.AreEqual(1, resultControl.Controls.Count);
             Assert.IsInstanceOf<UserControl>(resultControl);
             Assert.IsTrue(resultControl.AutoSize);
-            Assert.IsInstanceOf<BoxedLabel>(resultControl.GroupLabel);
-            Assert.IsTrue(resultControl.GroupLabel.AutoSize);
-            Assert.AreEqual(DockStyle.Fill, resultControl.GroupLabel.Dock);
-            Assert.AreEqual(new Padding(5, 0, 5, 0), resultControl.GroupLabel.Padding);
 
-            var description = TypeUtils.GetField<Label>(resultControl, "description");
+            var groupPanel = TypeUtils.GetField<TableLayoutPanel>(resultControl, "GroupPanel");
+            Assert.AreEqual(2, groupPanel.ColumnCount);
+            Assert.AreEqual(1, groupPanel.RowCount);
+
+            var description = (Label) groupPanel.GetControlFromPosition(0, 0);
             Assert.IsTrue(description.AutoSize);
             Assert.AreEqual(DockStyle.Fill, description.Dock);
             Assert.AreEqual(ContentAlignment.MiddleLeft, description.TextAlign);
             Assert.AreEqual("Assemblageresultaat voor dit toetsspoor:", description.Text);
+
+            var groupLabel = (BoxedLabel) groupPanel.GetControlFromPosition(1, 0);
+            Assert.IsTrue(groupLabel.AutoSize);
+            Assert.AreEqual(DockStyle.Fill, groupLabel.Dock);
+            Assert.AreEqual(new Padding(5, 0, 5, 0), groupLabel.Padding);
+
+            ErrorProvider errorProvider = GetErrorProvider(resultControl);
+            TestHelper.AssertImagesAreEqual(Resources.ErrorIcon.ToBitmap(), errorProvider.Icon.ToBitmap());
         }
+
+        [Test]
+        public void SetError_ErrorNull_ThrowsArgumentNullException()
+        {
+            // Setup
+            var resultControl = new FailureMechanismAssemblyResultControl();
+
+            // Call
+            TestDelegate test = () => resultControl.SetError(null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(test);
+            Assert.AreEqual("error", exception.ParamName);
+        }
+
+        [Test]
+        public void SetError_WithError_SetsErrorOnControl()
+        {
+            // Setup
+            const string error = "random error 123";
+            var resultControl = new FailureMechanismAssemblyResultControl();
+
+            // Call
+            resultControl.SetError(error);
+
+            // Assert
+            ErrorProvider errorProvider = GetErrorProvider(resultControl);
+            Assert.AreEqual(error, errorProvider.GetError(resultControl));
+        }
+
+        [Test]
+        public void ClearError_ClearsErrorOnControl()
+        {
+            // Setup
+            var resultControl = new FailureMechanismAssemblyResultControl();
+
+            // Call
+            resultControl.ClearError();
+
+            // Assert
+            ErrorProvider errorProvider = GetErrorProvider(resultControl);
+            Assert.AreEqual(string.Empty, errorProvider.GetError(resultControl));
+        }
+
+        private static ErrorProvider GetErrorProvider(FailureMechanismAssemblyResultControl resultControl)
+        {
+            return TypeUtils.GetField<ErrorProvider>(resultControl, "ErrorProvider");
+        }
     }
 }
\ No newline at end of file