---
title: "execute(_:)"
framework: contacts
role: symbol
role_heading: Instance Method
path: "contacts/cncontactstore/execute(_:)"
---

# execute(_:)

Executes a save request and returns success or failure.

## Declaration

```swift
func execute(_ saveRequest: CNSaveRequest) throws
```

## Parameters

- `saveRequest`: The save request to execute.

## Return Value

Return Value true if the save request executes successfully; otherwise, false. Discussion It is recommended that you do not access objects in the save request from other threads when it is in the process of being executed, because it may modify the contacts in the process. A save request only applies the changes to the objects. If there are overlapping changes with multiple or concurrent CNSaveRequest then the last saved change wins. note: In Swift, this method returns Void and is marked with the throws keyword to indicate that it throws an error in cases of failure. You call this method in a try expression and handle any errors in the catch clauses of a do statement, as described in Error Handling in The Swift Programming Language and About Imported Cocoa Error Parameters.