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# Account Creation Requires Phone Number

A Boolean value that indicates whether an app requires someone to provide a phone number to create an account.

## Discussion

When your app calls <doc://com.apple.documentation/documentation/AuthenticationServices/ASAuthorizationAccountCreationProvider/createPlatformPublicKeyCredentialRegistrationRequest(acceptedContactIdentifiers:shouldRequestName:relyingPartyIdentifier:challenge:userID:)> to start the account-creation flow, the `acceptedContactIdentifiers` array can contain <doc://com.apple.documentation/documentation/AuthenticationServices/ASContactIdentifierRequest/email>, <doc://com.apple.documentation/documentation/AuthenticationServices/ASContactIdentifierRequest/phoneNumber>, or both.
If the array only contains `phoneNumber`, then you must include the  `com.apple.developer.authentication-services.account-creation-requires-phone-number` entitlement in your app in Xcode, which states your app always requires a person’s phone number to create an account, with or without the use of the Account Creation API.

If your call to <doc://com.apple.documentation/documentation/AuthenticationServices/ASAuthorizationAccountCreationProvider/createPlatformPublicKeyCredentialRegistrationRequest(acceptedContactIdentifiers:shouldRequestName:relyingPartyIdentifier:challenge:userID:)> allows use of an email to create an account, or a choice of email or phone number, you don’t need this entitlement.

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