---
title: identifier
framework: contacts
role: symbol
role_heading: Instance Property
path: contacts/cncontactproperty/identifier
---

# identifier

The identifier of the labeled value in the array of labeled.

## Declaration

```swift
var identifier: String? { get }
```

## Discussion

Discussion Identifier is used only for properties in labeled arrays. If the property is not an array of labeled values, the value of the identifier is nil.

## See Also

### Getting the Property Information

- [key](contacts/cncontactproperty/key.md)
- [value](contacts/cncontactproperty/value.md)
- [label](contacts/cncontactproperty/label.md)