---
title: suggestedBatchSize
framework: ContactProvider
role: symbol
role_heading: Instance Property
platforms: [iOS 18.0+, iPadOS 18.0+]
path: contactprovider/contactitemchangeobserver/suggestedbatchsize
---

# suggestedBatchSize

Retrieves the suggested number of changed contact items to include in a batch.

## Declaration

```swift
var suggestedBatchSize: Int { get }
```

## Discussion

Discussion This value is a suggested upper limit for the number of contact items you can pass in the aggregate calls to didUpdate(_:) and didDelete(_:). Exceeding this limit may result in memory issues.