3512235 - The E-Mail attribute in BTP Users menu has the value <sub value>@user.from.sap.custom.cf

• You have established BTP <=> IAS <=> Microsoft Entra ID for user authentication.
• You've disabled Identity Federation, which means IAS only acts as a proxy to take all assertion attributes and Subject Name Identifier from the corporate IdP assertion and sends them to the application.
• "Create Shadow Users on User Logon" is enabled for IAS IDP at BTP.
• When user first login to BTP, the shadow user will be created in BTP Users menu.
  However, the E-Mail attribute in BTP has the value <sub value>@user.from.sap.custom.cf, where <sub value> is the value of Microsoft Entra ID's Subject Name Identifier.
  
• The expected behavior is that E-Mail attribute in BTP has the correct e-mail address.

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