# ABMultiValueCopyPrimaryIdentifier(_:) Returns the identifier for the primary value. ``` func ABMultiValueCopyPrimaryIdentifier(_ multiValue: ABMultiValueRef!) -> Unmanaged! ``` ## Parameters `multiValue` The multi-value list that you wish to access. ## Return Value The unique identifierfor the primary value. You are responsible for releasing this object. ## Discussion Use the [`ABMultiValueCopyIdentifierAtIndex(_:_:)`](/documentation/AddressBook/ABMultiValueCopyIdentifierAtIndex(_:_:)) functionto get index for the returned identifier, and the [`ABMultiValueCopyValueAtIndex(_:_:)`](/documentation/AddressBook/ABMultiValueCopyValueAtIndex(_:_:))functionto get 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)