Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Calculators/UpliftVan/UpliftVanCalculator.cs
===================================================================
diff -u -rdbb10eeea682a788576e9f91697ce896e4542263 -r607de464c7e4a83c61b0282d2b4824248a03b664
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Calculators/UpliftVan/UpliftVanCalculator.cs	(.../UpliftVanCalculator.cs)	(revision dbb10eeea682a788576e9f91697ce896e4542263)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Calculators/UpliftVan/UpliftVanCalculator.cs	(.../UpliftVanCalculator.cs)	(revision 607de464c7e4a83c61b0282d2b4824248a03b664)
@@ -83,12 +83,14 @@
 
             try
             {
-                return upliftVanKernel.Validate();
+                upliftVanKernel.Validate();
             }
             catch (UpliftVanKernelWrapperException e)
             {
                 throw new UpliftVanCalculatorException(e.Message, e);
             }
+
+            return new List<string>();
         }
 
         private IUpliftVanKernel CalculateUpliftVan()
Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Service/MacroStabilityInwardsCalculationService.cs
===================================================================
diff -u -r1f3fddaac65234e58f42a23a5c30c8d15552fda4 -r607de464c7e4a83c61b0282d2b4824248a03b664
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Service/MacroStabilityInwardsCalculationService.cs	(.../MacroStabilityInwardsCalculationService.cs)	(revision 1f3fddaac65234e58f42a23a5c30c8d15552fda4)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Service/MacroStabilityInwardsCalculationService.cs	(.../MacroStabilityInwardsCalculationService.cs)	(revision 607de464c7e4a83c61b0282d2b4824248a03b664)
@@ -69,7 +69,7 @@
 
             UpliftVanCalculatorInput upliftVanCalculatorInput = CreateInputFromData(calculation.InputParameters);
             IUpliftVanCalculator calculator = MacroStabilityInwardsCalculatorFactory.Instance.CreateUpliftVanCalculator(upliftVanCalculatorInput, MacroStabilityInwardsKernelWrapperFactory.Instance);
-            List<string> validationResults = new List<string>();
+            List<string> validationResults = calculator.Validate();
             CalculationServiceHelper.LogMessagesAsError(RingtoetsCommonServiceResources.Error_in_validation_0, validationResults.ToArray());
 
             CalculationServiceHelper.LogValidationEnd();