The formatting on the reply was really bad, I'll post it again as an answer, so it is better formatted.

Well, guess that's what I'll do then, hope it works for you too. Thanks for the assistance, really appreciated it :)

Hi iturrajoel, first of all thanks for the help. Actually my synchronization is happening automatically, since I'm using NSPersistentCloudKitContainer as my persistentContainer. I imagine that doing it manually would allow me to create each id, but the amount of work needed to do the manual sync would be enormous. Do you think that is the only way to do it, or is there another way to guarantee uniqueness that has a better tradeoff? Like some sort of collision check on the cloud kit update notification, or something like that.