2753454 - Incorrect destination when using Okta corporate IDP with Identity Authentication Service

• When using the Identity Authentication Service (IAS) tenant as a proxy in a corporate IDP initiated login scenario with the corporate IDP Okta, the error detailed in the screenshot below is displayed:

Error: Identity Provider could not process the authentication request received. Delete your browser cache and stored cookies, and restart your browser. If you still experience issues after doing this, please contact your administrator.

• In the Troubleshooting log, the following error is displayed:

There is no SAML2 authentication request to validate in the given POST parameters.

or 

Identity Provider could not process SAML2 authentication request sent over POST due to SAML2 core error that prevents sending error response to the caller.
There is no SAML2 authentication request to validate in the given POST parameters Id

• SAP Cloud Platform Identity Authentication Service
• Okta

IAS, Identity Authentication Service, Okta, ACS endpoint, destination, SSO, single sign on, URL, IDP initiated, sci, Idp-initiated , KBA , BC-IAM-IDS , Identity Authentication Service , Problem