# HistoryDelete An interface that enables a custom data store to delete items from the history of changes to its persisted models. ``` protocol HistoryDelete : Sendable ``` ## Topics ### History deletion properites [`var changeIdentifier: Self.ChangeIdentifier`](/documentation/SwiftData/HistoryDelete/changeIdentifier-swift.property) The change identifier of the delete operation. [`var changedPersistentIdentifier: PersistentIdentifier`](/documentation/SwiftData/HistoryDelete/changedPersistentIdentifier) The changed persistent identifier of the delete operation. [`var tombstone: HistoryTombstone`](/documentation/SwiftData/HistoryDelete/tombstone) The value the framework uses to represent information about data the Swift Data previously deleted from a model. [`var transactionIdentifier: Self.TransactionIdentifier`](/documentation/SwiftData/HistoryDelete/transactionIdentifier-swift.property) The delete operation’s transaction identifier. ### Associated types [`associatedtype ChangeIdentifier : Comparable, Hashable, Sendable`](/documentation/SwiftData/HistoryDelete/ChangeIdentifier-swift.associatedtype) The type associated with the change identifier. [`associatedtype Model : PersistentModel`](/documentation/SwiftData/HistoryDelete/Model) The type associated with the persistent model. [`associatedtype TransactionIdentifier : Comparable, Hashable, Sendable`](/documentation/SwiftData/HistoryDelete/TransactionIdentifier-swift.associatedtype) The type associated with the transaction identifier. ## Relationships ### Inherits From [`Sendable`](/documentation/Swift/Sendable) [`SendableMetatype`](/documentation/Swift/SendableMetatype) ### Conforming Types [`DefaultHistoryDelete`](/documentation/SwiftData/DefaultHistoryDelete) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)