After implementing the CA PPM / Agile Central integration we receive the following error when troubleshooting with Developer Tools console view: "Refused to display 'https://cppm1234.ondemand.ca.com/pm/integration.html#' in a frame because it set 'X-Frame-Options' to 'sameorigin'"
1. Both the Integration URL and Referrer URL(even if non-SSO) fields need to be filled in the Administration Menu > General Settings; Integrations > Integration <INtegration Name> General page even if they are the same URL.
2. Run the Synchronize Agile Central job