Does SwiftData have a method like CoreData's context.perform {} context.performAndWait {}? I execute it in an asynchronous thread, context.insert(userBook), and get an error message Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Illegal attempt to establish a relationship 'user' between objects in different contexts (source = <NSManagedObject: 0x6000021f1400> (entity: UserBookEntity; id: 0x6000003366e0 <x-coredata:///UserBookEntity/tEB7 59DFB-A4B1-4216-9138 -809BAB786A5920>; I define a base Repo struct BaseRepo { static let shared = BaseRepo() var container: ModelContainer? var context: ModelContext? let fullModelList: [any PersistentModel.Type] = [ DomainDict.self, User.self, UserBookEntity.self, Book.self, Category.self ] init() { do{ container = try ModelContainer(for: fullModelList) if let container { context = ModelContext(container) } } catch{ print(error) } } } then I save data ,but get an error,It shows that I am not in the same context, but I pass in the same context func saveBookData(bookData: FetchBookData,uid: String) -> Future<Void, Error> { return Future { promise in guard let context = BaseRepo.shared.context, let bookListResp = bookData.bookList, let user = UserSvc.shared.findUserByUid(context: context, uid: uid) else { return } BookSvc.shared.saveBookData(context: context, user: user, bookListResp: bookListResp) promise(.success(())) } } func saveBookData(context: ModelContext, user: User,bookListResp: BookListResp) { let bookRoleDtoList = bookListResp.content let date = Date() bookRoleDtoList.forEach { bookRoleDto in let userBook = UserBookEntity( id: UUID(), user: user) userBook.book = book context.insert(userBook) } }