2467934 - Receiving errors when using SAML SSO connections to HANA

• Receiving various errors in web intelligence (webi) when attempting to connect to SAML SSO to HANA
• Connection test in CMC succeeds 
• SAML logs in KBA 2593463 show "Successfully created an unsolicited response"
• Errors found similar to the ones below in webi logs. 

com.businessobjects.sdk.core.server.CommunicationException$UnexpectedServerException: Failed to open a browsing session with the connection 'com.sap.sl.relational.impl.ConnectionSpecificationImpl@4e0a61f4 (networkLayer: JDBC, database: sapHana1x, connectionUri: cuid://, connectionAvailable: true)'

Cause: java.lang.RuntimeException: com.sap.db.jdbc.exceptions.JDBCDriverException: SAP DBTech JDBC: [591]: internal error: Invalid principal id for principal $principalName$..

• another error observed is 

java.lang.RuntimeException: java.lang.RuntimeException: com.sap.db.jdbc.exceptions.jdbc40.SQLInvalidAuthorizationSpecException: [10]: authentication failed (Error: INF )

• This also mey be related to the error "The authentication provider (secEnterprise) associated with this logon session does not support inter-process Single Sign-On. Contact your system administrator for details. (FWB 00018)" which is documented in this SAP note 2636378

• SAP BusinessObjects Business Intelligence Platform 4.x (this is not specific to any version yet although the issue was observed more often on BI 4.2)
• HANA DB (no versions)

biauth emkba , KBA , HAN-DB-SEC , SAP HANA Security & User Management , BI-BIP-AUT , Authentication, ActiveDirectory, LDAP, SSO, Vintela , BI-RA-WBI-BE , Back End/Server , Problem