SAML2 SSO is failing, and you can find this warning on the Troubleshooting Wizard trace:
Service Provider has received SAML2Assertion from Identity Provider [Identity Provider] that does not specify Subject Name ID.
SAP NetWeaver Application Server Java
saml login module authentication stack, Java, server , KBA , BC-JAS-SEC-LGN , Logon, SSO , Problem
About this pageThis is a preview of a SAP Knowledge Base Article. Click more to access the full version on SAP ONE Support launchpad (Login required).
Search for additional results
Visit SAP Support Portal's SAP Notes and KBA Search.