Question: In a Policy and Charging Control (PCC) context, when a request falls under the 'Permanent Failures' category in the Gx reference point, what action should the peer take upon receiving the error notification?
Option 1: Retry the request after a predetermined backoff period to handle potential transient network issues.
Option 2: Do not attempt the request again, as indicated by the error's categorization as a Permanent Failure.
Option 3: Modify the request parameters based on the Experimental-Result-Codes provided and resubmit.
Option 4: Escalate the issue to a higher-level network management system for manual intervention.
Explanation: In the context of PCC, Permanent Failures signify that a request cannot be fulfilled under current conditions, and retrying would be futile. The receipt of such an error notification informs the peer that the request should not be attempted again, ensuring efficient resource utilization and preventing unnecessary network traffic.