---
title: isIncremental
framework: callkit
role: symbol
role_heading: Instance Property
path: callkit/cxcalldirectoryextensioncontext/isincremental
---

# isIncremental

A Boolean value that indicates whether the request provides data incrementally.

## Declaration

```swift
var isIncremental: Bool { get }
```

## Discussion

Discussion Before adding or removing any entries, if you call this method and the value is true, the request must only add or remove entries relative to the last time the system loaded data for the extension. Otherwise, if you don’t call this method, or if the value is false, the request must add the full list of entries without removing any, regardless of whether the system loaded data in the past.

## See Also

### Completing Requests

- [completeRequest(completionHandler:)](callkit/cxcalldirectoryextensioncontext/completerequest(completionhandler:).md)