Question: When a PCEF fails to install/activate a new PCC rule using PUSH mode due to unsuccessful resource allocation, how does it communicate the failure to the PCRF?
Option 1: Via an RAA response to the initial RAR
Option 2: Via a new CCR command including a Rule-Failure-Code AVP
Option 3: By modifying the existing PCC rule to reflect the failure
Option 4: The PCEF does not communicate the failure for resource allocation issues
Explanation: According to error handling procedures for PCC rules, if a new PCC rule's installation/activation fails due to unsuccessful resource allocation in PUSH mode, the PCEF informs the PCRF through a new CCR command. This includes a Rule-Failure-Code AVP to specify the failure reason, ensuring the PCRF is notified of the allocation issue for potential action or reconfiguration.