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# distributionIdentifier(forProperty:person:)

Returns the distribution identifier for the given property and person.

```
func distributionIdentifier(forProperty property: String!, person: ABPerson!) -> String!
```

## Parameters

`property`

The property whose distribution identifier will be returned.

`person`

The person whose distribution identifier will be returned.

## Return Value

The distribution identifier for the given property and person.

## Discussion

If a distribution identifier is not set, this method returns the multivalue’s primary identifier. If either the `property` or the `person` argument is `nil`, this method returns `nil`. This method also returns `nil` if `property` is not a multivalue list property, or if `person` is not a member of the group.

Distribution identifiers let you use groups as distribution lists, by indicating which value in a multivalue property should be used when addressing the group. See [Using Address Book Groups as Distribution Lists](https://developer.apple.com/library/archive/documentation/UserExperience/Conceptual/AddressBook/Tasks/CreatingMailingLists.html#//apple_ref/doc/uid/20001025) for more detailed discussion.

---

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