Index: Ringtoets/Integration/src/Ringtoets.Integration.Service/Merge/AssessmentSectionProviderService.cs
===================================================================
diff -u -r03944888070e0a93a7a8af136e0e859ecc77e694 -rf940039cf98be19f0e419fbb22dd4d17777c89ed
--- Ringtoets/Integration/src/Ringtoets.Integration.Service/Merge/AssessmentSectionProviderService.cs	(.../AssessmentSectionProviderService.cs)	(revision 03944888070e0a93a7a8af136e0e859ecc77e694)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Service/Merge/AssessmentSectionProviderService.cs	(.../AssessmentSectionProviderService.cs)	(revision f940039cf98be19f0e419fbb22dd4d17777c89ed)
@@ -3,6 +3,7 @@
 using Core.Common.Base.Storage;
 using log4net;
 using Ringtoets.Integration.Data;
+using Ringtoets.Integration.Service.Exceptions;
 
 namespace Ringtoets.Integration.Service.Merge
 {
@@ -31,14 +32,17 @@
 
         public IEnumerable<AssessmentSection> GetAssessmentSections(string filePath)
         {
-            RingtoetsProject openedProject = null;
+            RingtoetsProject openedProject;
             try
             {
-                openedProject = (RingtoetsProject)storage.LoadProject(filePath);
+                openedProject = (RingtoetsProject) storage.LoadProject(filePath);
             }
             catch (StorageException e)
             {
-                log.Error(e.Message, e.InnerException);
+                string exceptionMessage = e.Message;
+                log.Error(exceptionMessage, e.InnerException);
+
+                throw new AssessmentSectionProviderException(exceptionMessage, e);
             }
 
             return openedProject?.AssessmentSections;
Index: Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/Merge/AssessmentSectionProviderServiceTest.cs
===================================================================
diff -u -r03944888070e0a93a7a8af136e0e859ecc77e694 -rf940039cf98be19f0e419fbb22dd4d17777c89ed
--- Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/Merge/AssessmentSectionProviderServiceTest.cs	(.../AssessmentSectionProviderServiceTest.cs)	(revision 03944888070e0a93a7a8af136e0e859ecc77e694)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/Merge/AssessmentSectionProviderServiceTest.cs	(.../AssessmentSectionProviderServiceTest.cs)	(revision f940039cf98be19f0e419fbb22dd4d17777c89ed)
@@ -5,6 +5,7 @@
 using NUnit.Framework;
 using Rhino.Mocks;
 using Ringtoets.Integration.Data;
+using Ringtoets.Integration.Service.Exceptions;
 using Ringtoets.Integration.Service.Merge;
 
 namespace Ringtoets.Integration.Service.Test.Merge
@@ -82,25 +83,41 @@
         }
 
         [Test]
-        public void GetAssessmentSections_LoadingProjectFailed_LogsErrorAndThrowsStorageException()
+        public void GetAssessmentSections_LoadingProjectThrowsException_ThrowsAssessmentSectionProviderExceptionAndLogsError()
         {
             // Setup
             const string filePath = "Some path";
-            const string exceptionMessage = "Storage exception";
+            const string exceptionMessage = "StorageException";
 
+            var storageException = new StorageException(exceptionMessage);
+
             var mocks = new MockRepository();
             var storeProject = mocks.StrictMock<IStoreProject>();
-            storeProject.Expect(sp => sp.LoadProject(filePath)).Throw(new StorageException(exceptionMessage));
+            storeProject.Expect(sp => sp.LoadProject(filePath)).Throw(storageException);
             mocks.ReplayAll();
 
             var provider = new AssessmentSectionProviderService(storeProject);
 
+            AssessmentSectionProviderException exception = null;
+
             // Call
-            Action call = () => provider.GetAssessmentSections(filePath);
+            Action call = () =>
+            {
+                try
+                {
+                    provider.GetAssessmentSections(filePath);
+                }
+                catch (AssessmentSectionProviderException e)
+                {
+                    exception = e;
+                }
+            };
 
             // Assert
             var expectedLogMessage = new Tuple<string, LogLevelConstant>(exceptionMessage, LogLevelConstant.Error);
             TestHelper.AssertLogMessageWithLevelIsGenerated(call, expectedLogMessage);
+            Assert.AreEqual(storageException, exception.InnerException);
+            Assert.AreEqual(storageException.Message, exception.Message);
             mocks.VerifyAll();
         }
     }