Error Code 504

Associated Error Category: Policy SBR Error

Description: ComAgent resource unavailable when sending stack event to pSBR.

Associated P-DRA Alarm/Event: Event 22704 - Policy DRA Communication Agent Error (refer to the DSR Alarms and KPIs Reference for details about this event)

Associated Measurement: TxPdraErrAnsGeneratedCAFailure

Associated Diameter Interface / Message Type:

Gx CCR-I, CCR-U, and CCR-T
Rx AAR, STR
Gx-Prime CCR-I, CCR-U, and CCR-T

GUI Configurable: Yes

Recovery:

Check CCR-I Processing with PCRF Pool in the Error Resolution appendix of the Policy DRA User Guide to investigate and understand the circumstances where the error occurs.
Check the Main Menu > Alarms & Events > View History and set the Display Filter by Events (in particular, 19810 - Communication Agent Egress Message Discarded, 19811 - Communication Agent Ingress Message Discarded, 19814 - Communication Agent Peer has not responded to heartbeat, 19832 - Communication Agent Reliable Transaction Failed, 19833 - Communication Agent Service Egress Message Discarded, and 22712 - Policy SBR Communication Error). Refer to the DSR Alarms and KPIs Reference for details about these events.
Check the Policy DRA SOAM GUI at Main Menu > Polcy DRA > Maintenance > Policy SBR Status to verify the status of the binding SBR, session SBR, and related resources/sub-resources (Resource HA Role, Congestion Level, etc.)
Go to Main Menu > Communication Agent > Maintenance to verify Connection Status, Routed Services Status, and HA Services Status for resolving ComAgent unavailability.