We are in the process of testing branched versioning with Parcel Fabric. I preparation we have using parcel fabric in a standard Geodatabase. The AssignDefaultToField tool appears to work fine in ParcelFabric editing of a feature in a geodatabase. However, it does not appear to work in when using branched versioning. Using standard processes I can go in and change a default value (see below)

However, when I go to use the tool it give the following error message.

From the documentation it does not appear that this should be a problem. Is this an error or did I miss something regarding the limitation of features stored in a branched version?