# ABGroupCopyDistributionIdentifier(_:_:_:) Returns the distribution identifier for the given propertyand person. ``` func ABGroupCopyDistributionIdentifier(_ group: ABGroupRef!, _ person: ABPersonRef!, _ property: CFString!) -> Unmanaged! ``` ## Parameters `group` The group object that `person` belongs to. `person` A person object whose distribution identifier you want to obtain. `property` The name of a person’s multi-value list property whose distribution identifier you want to obtain. ## Return Value The distribution identifierfor `person` and `property` ifit was set, otherwise returns the property’s primary identifier.If either `person` or `property` are `NULL`,this function returns `NULL`. Also,returns `NULL` if `property` isnot a multi-value list property. You are responsible for releasingthis object. ## Discussion Use the [`ABGroupSetDistributionIdentifier(_:_:_:_:)`](/documentation/AddressBook/ABGroupSetDistributionIdentifier(_:_:_:_:)) functionto set the distribution identifier for a person’s multi-valuelist property. --- 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)