I'd like to know if your old ERP Agent (PeopleSoft, SAP, SiebelSoft, among the others) will still besupported with Policy Server 12.7 ?
At first glance, yes they will be fully supported. As stated by ourSupport Matrix :
4 CA Security Cross Product Compatibility 4.1 Policy Server and Agents Compatibility
CA Single Sign-On Policy Server 12.7 supports previous versions of Agents and Access Gateways (previously called Secure Proxy Server) with the following caveats:
Any 6.x versions of Web Agents, Access Gateways (previously called Secure Proxy Server), ERP Agents, ASA Agents, and 5.x versions of ERP Agents that are not beyond their end-of-service date do not support IPv6 or FIPS Mode (and can only connect to 12.7 Policy Server in FIPS Compatibility Mode).
• Web Agent, Access Gateway, ERP Agent and ASA Agent versions prior to r12.0 SP3 cannot be installed on the same machine as a r12.6 (or higher numbered) Policy Server.
CA Single Sign-On 12.7 Product Support Matrix https://support.ca.com/phpdocs/7/5262/5262-12-7-platform-support-matrix.pdf
KB : KB000093488