Hello - I'll try to address both questions here. However, the first one regarding the " internal server error.Unable to process request." may need to be addressed on a ticket.
This message could be related to several causes, a frequent cause is the their is an issue with the agentname/defaultagentname in the ACO for the agent.
Policy Server Requirements for Apache-based Servers - CA Single Sign-On - 12.52 SP1 - CA Technologies Documentation
AgentName
Defines the identity of the web agent. This identity links the name and the IP address or FQDN of each web server instance hosting an Agent.
The value of the DefaultAgentName is used instead of the AgentName parameter if any of the following events occur:
- The AgentName parameter is disabled.
- The value of AgentName parameter is empty.
- The values of the AgentName parameter do not match any existing agent object.
The purpose of the SSO Agent for SharePoint is to project MS SharePoint Servers.
The SSO Agent for SharePoint sits in front of the SharePoint server as a proxy device.
However, there are added features for intgration into SharePoint as a "Claims Provider" to SharePoint.
Introduction - CA Single Sign On Agent for SharePoint - 12.52 SP1 - CA Technologies Documentation
Does this help?
Kind regards,
James Atchley