3582389 - IAS: After authentication rules are set, logon to the application fails with Cannot invoke 'String.equals(Object)' error

• After adding authentication rules in the conditional authentication of an application in IAS tenant, pointing to a Corporate IdP, it is not possible to logon to the application.
• In IAS Troubleshooting files, you see the following error:

"Identity provider response could not be handled. Identity provider response could not be handled. Caused by: Cannot invoke 'String.equals(Object)' because the return value of 'com.sap.ids.serviceprovider.AuthenticationRule.getldentityProviderEntityID()' is null"

Identity Authentication

KBA , BC-IAM-IDS , Identity Authentication Service , Problem