Question: In a Policy and Charging Control (PCC) architecture, what does a `REQUESTED_SERVICE_TEMPORARILY_NOT_AUTHORIZED` (4261) Experimental-Result-Code value typically indicate to a peer in response to a service request?
Option 1: The PCRF is permanently unable to provide the requested service due to a mismatch with operator-defined policy rules for the user's current congestion status.
Option 2: A temporary inability of the network to deliver the service as requested by the AF, often due to inconsistency with operator policy rules during congestion.
Option 3: The AF has insufficient credits to provision the new or modified service, prompting a temporary rejection.
Option 4: A hardware failure at the PCRF requiring a restart before any new requests can be processed.
Explanation: This Experimental-Result-Code value (4261) is specifically defined for transient failures, indicating that while the network cannot fulfill the service request at the moment (e.g., due to congestion or policy inconsistencies), it may be able to do so in the future. This aligns with the definition of transient failures as situations where a request could not be satisfied at the time of receipt but might be satisfiable later.