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Difficulty Updating Core Data Model with NSPersistentContainer in iOS 16

👀 Views: 29 💬 Answers: 1 📅 Created: 2025-06-05
CoreData iOS16 NSPersistentContainer Swift

I'm currently working on an iOS 16 application that uses Core Data with NSPersistentContainer. I've updated my data model and added a new entity, but I'm working with an scenario where the new entity isn't being recognized in my context after migration. I have the following setup in my AppDelegate: ```swift lazy var persistentContainer: NSPersistentContainer = { let container = NSPersistentContainer(name: "MyAppModel") container.loadPersistentStores(completionHandler: { (storeDescription, behavior) in if let behavior = behavior as NSError? { fatalError("Unresolved behavior \(behavior), \(behavior.userInfo)") } }) return container }() ``` When I attempt to save an instance of the new entity, I get the following behavior in the console: ``` Fatal behavior: Unresolved behavior behavior Domain=NSCocoaErrorDomain Code=134030 "The operation couldn’t be completed. (Cocoa behavior 134030.)" UserInfo={NSValidationErrorObject=<NSManagedObject: 0x600003d6c0c0>, NSValidationErrorKey=entity} ``` I've tried resetting the simulator and cleaning the build folder, but that hasn't resolved the scenario. I'm not using any migration options right now since I'm just testing in development. I also verified that the new entity is configured correctly in the .xcdatamodeld file and that the versioning settings are correct. Any insights on how to resolve this migration scenario would be greatly appreciated!