SAML 2.0 assertion response URL for Ping Federate 6.1 service provider

A supplier uses Ping Federate for SAML开发者_开发技巧-based single sign-on. I've got some custom SAML 2.0 code which implements a rudimentary identity provider. I'm doing IDP-initiated SSO with URL and HTTP Post. The PF service provider is at https://domain/sp/startSSO.ping. What URL should I be posting my response (assertion) to on the PF server?

I think the official name for the URL I need is the Assertion Consumer Service (ACS) endpoint.

Actually, this value is case sensitive for PingFederate. The value you should use is "/sp/ACS.saml2".

https://domain/sp/ACS.SAML2