Index: Ringtoets/Integration/src/Ringtoets.Integration.Service/Exceptions/AssessmentSectionProviderException.cs
===================================================================
diff -u
--- Ringtoets/Integration/src/Ringtoets.Integration.Service/Exceptions/AssessmentSectionProviderException.cs	(revision 0)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Service/Exceptions/AssessmentSectionProviderException.cs	(revision a11b9ebc3155cc78af19e03b867d4d88c076d83b)
@@ -0,0 +1,47 @@
+using System;
+using System.Runtime.Serialization;
+
+namespace Ringtoets.Integration.Service.Exceptions
+{
+    /// <summary>
+    /// Exception thrown when something went wrong when providing assessment sections.
+    /// </summary>
+    [Serializable]
+    public class AssessmentSectionProviderException : Exception
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="AssessmentSectionProviderException"/> class.
+        /// </summary>
+        public AssessmentSectionProviderException() {}
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="AssessmentSectionProviderException"/> class 
+        /// with a specified error message.
+        /// </summary>
+        /// <param name="message">The message that describes the error.</param>
+        public AssessmentSectionProviderException(string message)
+            : base(message) {}
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="AssessmentSectionProviderException"/> class with a specified error message 
+        /// and a reference to the inner exception that is the cause of this exception.
+        /// </summary>
+        /// <param name="message">The error message that explains the reason for the exception.</param>
+        /// <param name="innerException">The exception that is the cause of the current exception,
+        /// or <c>null</c> if no inner exception is specified.</param>
+        public AssessmentSectionProviderException(string message, Exception innerException) : base(message, innerException) {}
+
+        /// <summary>
+        /// Initializes a new instance of <see cref="AssessmentSectionProviderException"/> with
+        /// serialized data.</summary>
+        /// <param name="info">The <see cref="SerializationInfo"/> that holds the serialized
+        /// object data about the exception being thrown.</param>
+        /// <param name="context">The <see cref="StreamingContext"/> that contains contextual
+        /// information about the source or destination.</param>
+        /// <exception cref="ArgumentNullException">The <paramref name="info"/> parameter is
+        /// <c>null</c>.</exception>
+        /// <exception cref="SerializationException">The class name is <c>null</c> or
+        /// <see cref="Exception.HResult" /> is zero (0).</exception>
+        protected AssessmentSectionProviderException(SerializationInfo info, StreamingContext context) : base(info, context) {}
+    }
+}
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.Service/Ringtoets.Integration.Service.csproj
===================================================================
diff -u -r03944888070e0a93a7a8af136e0e859ecc77e694 -ra11b9ebc3155cc78af19e03b867d4d88c076d83b
--- Ringtoets/Integration/src/Ringtoets.Integration.Service/Ringtoets.Integration.Service.csproj	(.../Ringtoets.Integration.Service.csproj)	(revision 03944888070e0a93a7a8af136e0e859ecc77e694)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Service/Ringtoets.Integration.Service.csproj	(.../Ringtoets.Integration.Service.csproj)	(revision a11b9ebc3155cc78af19e03b867d4d88c076d83b)
@@ -17,6 +17,7 @@
   <ItemGroup>
     <Compile Include="Comparers\AssessmentSectionMergeComparer.cs" />
     <Compile Include="Comparers\IAssessmentSectionMergeComparer.cs" />
+    <Compile Include="Exceptions\AssessmentSectionProviderException.cs" />
     <Compile Include="Merge\AssessmentSectionProviderService.cs" />
     <Compile Include="Merge\IAssessmentSectionProvider.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
Index: Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/Exceptions/AssessmentSectionProviderExceptionTest.cs
===================================================================
diff -u
--- Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/Exceptions/AssessmentSectionProviderExceptionTest.cs	(revision 0)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/Exceptions/AssessmentSectionProviderExceptionTest.cs	(revision a11b9ebc3155cc78af19e03b867d4d88c076d83b)
@@ -0,0 +1,11 @@
+using System;
+using Core.Common.TestUtil;
+using NUnit.Framework;
+using Ringtoets.Integration.Service.Exceptions;
+
+namespace Ringtoets.Integration.Service.Test.Exceptions
+{
+    [TestFixture]
+    public class AssessmentSectionProviderExceptionTest :
+        CustomExceptionDesignGuidelinesTestFixture<AssessmentSectionProviderException, Exception> {}
+}
\ No newline at end of file
Index: Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/Ringtoets.Integration.Service.Test.csproj
===================================================================
diff -u -r03944888070e0a93a7a8af136e0e859ecc77e694 -ra11b9ebc3155cc78af19e03b867d4d88c076d83b
--- Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/Ringtoets.Integration.Service.Test.csproj	(.../Ringtoets.Integration.Service.Test.csproj)	(revision 03944888070e0a93a7a8af136e0e859ecc77e694)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/Ringtoets.Integration.Service.Test.csproj	(.../Ringtoets.Integration.Service.Test.csproj)	(revision a11b9ebc3155cc78af19e03b867d4d88c076d83b)
@@ -20,6 +20,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Comparers\AssessmentSectionMergeComparerTest.cs" />
+    <Compile Include="Exceptions\AssessmentSectionProviderExceptionTest.cs" />
     <Compile Include="Merge\AssessmentSectionProviderServiceTest.cs" />
     <Compile Include="RingtoetsDataSynchronizationServiceTest.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />