RegistryObject
In general, an attempt to delete a registry object is rejected if:
it is a new object, that is, it has not yet been saved, or
it is the target of an association.
Deleting a registry object has the following side-effects:
1. Remove the object from all its packages; update the packages.
2. Delink the object from all its external links; update the external links.
3. Delete all associations whose source object is the object to be deleted.
4. Delete all classifications whose classified object is the object to be deleted.
5. Delete all external identifiers whose registry object is the object to be deleted.
