Can someone please let us know how PingFederate admin can configure "Access-Control-Allow-Origin" at PingFederate side to allow the source?
At present, when our domain is trying to invoke token URI on PingFederate, we get back CORS policy error stating No Access-Control-Allow-Origin is present error.
From the documentation: System → OAuth Settings → Authorization Server Settings
There's a section there for CORS settings.
If this doesn't solve the issue, then you need to update your question with more information, such as what specifically is failing.