# uniqueIdentifier The value that uniquely identifies the searchable item within your app. ``` var uniqueIdentifier: String { get set } ``` ## Discussion This property is required because it’s the only way to identify searchable items in the index when you need to access or delete them. When you create a searchable item, the system generates a UUID by default, but you can replace the default value with a unique identifier that makes sense in the context of your app. If you want to use a custom value for [`uniqueIdentifier`](/documentation/CoreSpotlight/CSSearchableItem/uniqueIdentifier), be sure to set it before the item is indexed for the first time. --- 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)