Index: Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Service/GrassCoverErosionOutwardsWaveConditionsCalculationActivity.cs
===================================================================
diff -u -r0bb11ec189709c999bee440a31c003f00b0a3a2b -r2c68fa9dd748870624f45c0f2ae6a30327485a63
--- Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Service/GrassCoverErosionOutwardsWaveConditionsCalculationActivity.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationActivity.cs)	(revision 0bb11ec189709c999bee440a31c003f00b0a3a2b)
+++ Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Service/GrassCoverErosionOutwardsWaveConditionsCalculationActivity.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationActivity.cs)	(revision 2c68fa9dd748870624f45c0f2ae6a30327485a63)
@@ -87,7 +87,7 @@
 
         protected override void OnRun()
         {
-            PerformRun(() => true,
+            PerformRun(() => WaveConditionsCalculationService.Instance.Validate(calculation.InputParameters, assessmentSection.HydraulicBoundaryDatabase, calculation.Name),
                        () => GrassCoverErosionOutwardsDataSynchronizationService.ClearWaveConditionsCalculationOutput(calculation),
                        () =>
                        {