# isUpdate A Boolean value that indicates whether to treat the item as an update instead of a new item. ``` var isUpdate: Bool { get set } ``` ## Discussion Set the value of this property to `true` if the item represents an update to information already in the index. Marking an item as an update makes the indexing process more efficient. If this property is `false` and the system encounters an item with the same identifier in the index, it deletes the old item and then inserts the new one. When the property is `true`, it updates the existing item, which saves time. If this property is `true` and the item doesn’t exist in the index, the system ignores the request to index the item and doesn’t create a new item. When configuring the attributes for the item, set an attribute to `nil` to remove its value. --- 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)