Salesforce Authenticator(セールスフォース オーセンティケーター)で「バックアップが失敗しました」エラーが発生するのは、モバイル端末やネットワークの一時的な不具合が原因です。このエラーが発生した場合、端末の再起動やネットワークの変更、OSのアップデートを試みてください。
下記の対応をします。
関連項目:
Salesforce Authenticator モバイルアプリケーションでの接続済みアカウントのバックアップ作成
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