<!--
{
  "availability" : [
    "iOS: 13.0.0 -",
    "iPadOS: 13.0.0 -",
    "macCatalyst: 13.1.0 -",
    "macOS: 10.15.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 6.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "Contacts",
  "identifier" : "/documentation/Contacts/CNChangeHistoryFetchRequest/shouldUnifyResults",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "Contacts"
    ],
    "preciseIdentifier" : "c:objc(cs)CNChangeHistoryFetchRequest(py)shouldUnifyResults"
  },
  "title" : "shouldUnifyResults"
}
-->

# shouldUnifyResults

A Boolean value that indicates whether the fetch should return contact changes as unified contacts.

```
var shouldUnifyResults: Bool { get set }
```

## Discussion

If <doc://com.apple.documentation/documentation/Swift/true>, the fetch returns unified contact history. Otherwise the system returns individual contact history. A unified contact is the aggregation of properties from a set of linked individual contacts. If an individual contact is not linked then the unified contact is simply that individual contact.

---

Copyright &copy; 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)