Hi, I'm attempting to use the .Net SDK to update our schema, but I'm running into an issue that seems to be a bug with the SDK. I'm using the SchemaBuilder.Modify function on a featureclassdescription, but it fails with the error being "The operation is not supported by this implementation. (SHAPE: Is nullable)". The featureclass does have its Shape field defined as not allowing nulls. I was able to make this call work on another FeatureClass that allowed null in the Shape field. So it seems like under the covers the sdk is trying to make the SHAPE field nullable. This is for Utility network so I think that field must be Not Nullable. Any ideas?