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3211115 - SAML2 SSO failed with error: 'More than one user with email ' <Email Address> found


SAML2 SSO failed when accessing the AS ABAP systems, the following error is showing in the Security Diagnostic Tool trace log. 

SAML20 SP (client XXX): 'More than one user with email ' <Email Address> found

For how to collect the SAML trace log, please see note: 2960670 - How to collect SAML trace with the Security Diagnostic Tool for ABAP system.



SAP Netweaver Systems


SAP NetWeaver 7.4 ; SAP NetWeaver 7.5 ; SAP S/4HANA 1909 ; SAP S/4HANA 2021 ; SAP enhancement package 1 for SAP NetWeaver 7.3


More than one user with email, Persistent Users, Federation Type, Identity Federation, User Mapping mode, Email , KBA , BC-SEC-LGN-SML , SAML 2.0 for ABAP , BC-SEC-USR-ADM , Users and Authorization administration , Problem

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