---
title: serviceIdentifier
framework: authenticationservices
role: symbol
role_heading: Instance Property
path: authenticationservices/asaccountauthenticationmodificationreplacepasswordwithsigninwithapplerequest/serviceidentifier
---

# serviceIdentifier

An identifier that represents a particular service that the user needs a credential for, like a web site.

## Declaration

```swift
var serviceIdentifier: ASCredentialServiceIdentifier { get }
```

## See Also

### Creating Upgrade Requests in Your App

- [init(user:serviceIdentifier:userInfo:)](authenticationservices/asaccountauthenticationmodificationreplacepasswordwithsigninwithapplerequest/init(user:serviceidentifier:userinfo:).md)
- [user](authenticationservices/asaccountauthenticationmodificationreplacepasswordwithsigninwithapplerequest/user.md)
- [userInfo](authenticationservices/asaccountauthenticationmodificationreplacepasswordwithsigninwithapplerequest/userinfo.md)