Index: DamEngine/branches/DamEngine 19.2/src/Deltares.DamEngine.Data/General/Dike.cs
===================================================================
diff -u -r3296 -r3344
--- DamEngine/branches/DamEngine 19.2/src/Deltares.DamEngine.Data/General/Dike.cs	(.../Dike.cs)	(revision 3296)
+++ DamEngine/branches/DamEngine 19.2/src/Deltares.DamEngine.Data/General/Dike.cs	(.../Dike.cs)	(revision 3344)
@@ -226,6 +226,19 @@
                             "For Operational (DamLive), location {0} has {1} scenarios but only one is allowed!",
                             location.Name, location.Scenarios.Count));
                     }
+
+                    if (location.SensorLocation != null)
+                    {
+                        foreach (var sensorArray in location.SensorLocation.SensorGroup.SensorArray)
+                        {
+                            if (sensorArray.RelativeLocation < 0)
+                            {
+                                throw new DikeException(string.Format(
+                                    "For Operational (DamLive), location {0} has sensor which are not relative to the starting point.",
+                                    location.Name));
+                            }
+                        }
+                    }
                 }
             }
         }