core data - Set both Persistent Store and Parent Context -

What happens when is constantly stored in NSManagedObjectContext and the original reference is set and saved? Will this data continuously store and push parents' references one by one? Or will it do this concurrently? Or in the main figures only one complaint throws an exception?

The API does not stop directly from setting up two "parents" for any one reference.

this would be:

*** Due to the exception of the app Cancellation 'NSInternalInconsistencyException', Reason: 'The reference is already a coordinator; Can not change it. '

This is because when you set up parentContext , the constant store coordinator is set automatically on persistentStoreCoordinator of the original reference