Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Service/MacroStabilityInwardsCalculationService.cs
===================================================================
diff -u -rfff1d95ef2a08f34f16ac3f7870acc0a0c68eb83 -rb49aec40751eb5693981ed75a823b9993b9ab8ec
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Service/MacroStabilityInwardsCalculationService.cs	(.../MacroStabilityInwardsCalculationService.cs)	(revision fff1d95ef2a08f34f16ac3f7870acc0a0c68eb83)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Service/MacroStabilityInwardsCalculationService.cs	(.../MacroStabilityInwardsCalculationService.cs)	(revision b49aec40751eb5693981ed75a823b9993b9ab8ec)
@@ -134,20 +134,18 @@
 
             if (macroStabilityInwardsResult.CalculationMessages.Any(cm => cm.ResultType == UpliftVanKernelMessageType.Error))
             {
-                CalculationServiceHelper.LogMessagesAsError(macroStabilityInwardsResult.CalculationMessages
-                                                                                       .Where(cm => cm.ResultType == UpliftVanKernelMessageType.Error)
-                                                                                       .Select(cm => cm.Message).ToArray());
+                CalculationServiceHelper.LogMessagesAsError(new[]
+                {
+                    CreateAggregatedLogMessage(Resources.MacroStabilityInwardsCalculationService_Calculate_Errors_in_MacroStabilityInwards_calculation, macroStabilityInwardsResult)
+                });
             }
             else
             {
                 if (macroStabilityInwardsResult.CalculationMessages.Any())
                 {
                     CalculationServiceHelper.LogMessagesAsWarning(new[]
                     {
-                        Resources.MacroStabilityInwardsCalculationService_Calculate_Warnings_in_MacroStabilityInwards_calculation + Environment.NewLine +
-                        macroStabilityInwardsResult.CalculationMessages
-                                                   .Where(cm => cm.ResultType == UpliftVanKernelMessageType.Warning)
-                                                   .Aggregate(string.Empty, (current, logMessage) => current + $"* {logMessage.Message}{Environment.NewLine}").Trim()
+                        CreateAggregatedLogMessage(Resources.MacroStabilityInwardsCalculationService_Calculate_Warnings_in_MacroStabilityInwards_calculation, macroStabilityInwardsResult)
                     });
                 }
 
@@ -205,5 +203,13 @@
                     MaximumSliceWidth = inputParameters.MaximumSliceWidth
                 });
         }
+
+        private static string CreateAggregatedLogMessage(string baseMessage, UpliftVanCalculatorResult macroStabilityInwardsResult)
+        {
+            return baseMessage
+                   + Environment.NewLine
+                   + macroStabilityInwardsResult.CalculationMessages
+                                                .Aggregate(string.Empty, (current, logMessage) => current + $"* {logMessage.Message}{Environment.NewLine}").Trim();
+        }
     }
 }
\ No newline at end of file