While you're upgrading your SAP.com account, you enter your S-user ID as Username. There's a warning saying "There is an existing account with this username".
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Fiori Launchpad, username, existing, account, upgrading, アカウントのアップグレード, user, family name, first name, Suser, S-ID, ユーザ名 , KBA , BC-IAM-IDS , Identity Authentication Service , Problem
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