Index: Ringtoets/Common/src/Ringtoets.Common.Data/Calculation/ICalculationScenario.cs
===================================================================
diff -u -r23a37b025a5d0358c1f30fb31de41a2c284519a5 -rb1c2f3f896147de67d46fde3bce9098d94054037
--- Ringtoets/Common/src/Ringtoets.Common.Data/Calculation/ICalculationScenario.cs	(.../ICalculationScenario.cs)	(revision 23a37b025a5d0358c1f30fb31de41a2c284519a5)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Calculation/ICalculationScenario.cs	(.../ICalculationScenario.cs)	(revision b1c2f3f896147de67d46fde3bce9098d94054037)
@@ -19,6 +19,7 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using Core.Common.Base.Data;
 
 namespace Ringtoets.Common.Data.Calculation
@@ -41,6 +42,8 @@
         /// <summary>
         /// Gets the probability of the scenario.
         /// </summary>
+        /// <remarks>Implementers should throw <see cref="InvalidOperationException"/>
+        /// when the getter is called while the <see cref="CalculationScenarioStatus"/> does not return Done.</remarks>
         RoundedDouble Probability { get; }
 
         /// <summary>