Question: When a PCC rule activation fails for predefined rules with only uplink service data flow filters, and no Bearer-Identifier is provided in the Charging-Rule-Report AVP, what assumption does the PCRF make regarding the affected IP-CAN bearers?
Option 1: The PCRF assumes the failure is specific to the primary IP-CAN bearer.
Option 2: The PCRF assumes the PCC rule failed to activate on all assigned IP-CAN bearers of the same IP-CAN session.
Option 3: The PCRF will query the PCEF for clarification before making any assumptions.
Option 4: The PCRF ignores the failure for predefined rules with uplink filters.
Explanation: This is because, according to standard PCC rule error handling procedures, the absence of a Bearer-Identifier in the Charging-Rule-Report AVP indicates that the failure applies broadly across all assigned IP-CAN bearers within the same session.