3699845 - Case Sensitivity in Email Addresses Causes Authentication Failure when using Corp-IdP and IAS as proxy

There is the scenario that the corporate IdP(for example Entra ID) supports mixed-case email addresses, while IAS only supports lowercase email addresses. Additionally, the Service Provider (SP) requires the Identifier to be a mixed-case email address. When using the corporate IdP with IAS as a proxy and using email as the Subject Name Identifier, this discrepancy leads to login failures for the SP. 

• Identity Authentication Service

email case sensitivity,  mixed-case email, lowercase enforcement, subject name identifier, sap identity authentication service, email mismatch, sap ias email format. , KBA , BC-IAM-IDS , Identity Authentication Service , Problem