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# beginUserRegistration(loginManager:userName:method:options:completion:)

Initiates the user registration process for the user and the single sign-on extension.

```
func beginUserRegistration(loginManager: ASAuthorizationProviderExtensionLoginManager, userName: String?, method authenticationMethod: ASAuthorizationProviderExtensionAuthenticationMethod, options: ASAuthorizationProviderExtensionRequestOptions = [], completion: @escaping @Sendable (ASAuthorizationProviderExtensionRegistrationResult) -> Void)
```

```
func beginUserRegistration(loginManager: ASAuthorizationProviderExtensionLoginManager, userName: String?, method authenticationMethod: ASAuthorizationProviderExtensionAuthenticationMethod, options: ASAuthorizationProviderExtensionRequestOptions = []) async -> ASAuthorizationProviderExtensionRegistrationResult
```

## Parameters

`loginManager`

The login manager for interfacing with platform SSO.

`userName`

The user name for the user registration.

`authenticationMethod`

The authentication method to use for the user.

`options`

The request options that apply to the request.

`completion`

The completion to call to continue user registration.

## Discussion

The completion handler returns the status as an [`ASAuthorizationProviderExtensionRegistrationResult`](/documentation/AuthenticationServices/ASAuthorizationProviderExtensionRegistrationResult).

---

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