We have implemneted the SAMLAuth SSO using (IdP Initiated SSO). Pega sends the request to IdP when we hit the SSO url, Idp authenticates successfully and sends response back to Pega however we are using the default redirection url which got auto populated when we create SAML2.0 Authentication Service rule i.e. assertion consumer service location to http://****/prweb/PRRestService/WebSSO/SAML/AssertionConsumerService. We have not yet done any customization to the AssersionConsumer REST Service as a result we are getting the below error.
Unable to process the SAML WebSSO request :
We are using Pega 7.1.7
Could anyone suggest me steps/actions to make this SSO redirection successful.