Index: src/Deltares.DSoilModel.Forms/DSoilModelContext.cs
===================================================================
diff -u -r716 -r721
--- src/Deltares.DSoilModel.Forms/DSoilModelContext.cs	(.../DSoilModelContext.cs)	(revision 716)
+++ src/Deltares.DSoilModel.Forms/DSoilModelContext.cs	(.../DSoilModelContext.cs)	(revision 721)
@@ -425,6 +425,12 @@
                 }
             }
 
+            var cp = source as CharacteristicPoint;
+            if (cp != null && (member == cp.GetMemberName(p => p.X) || member == cp.GetMemberName(p => p.Z) || member == cp.GetMemberName(p => p.CharacteristicPointType)))
+            {
+                return false;
+            }
+
             return base.IsEnabled(source, member);
         }