Error Code 509

Associated Error Category: Session Not Found

Description: Session Not Found - session record doesn't exist for given session ID.

Associated P-DRA Alarm/Event: Event 22705 - Policy SBR Error Response Received By Policy DRA (refer to the DSR Alarms and KPIs Reference for details about this event)

Associated Measurement: SbrFindSessDbErr

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:

  1. CheckfindSession Response Processing and AAR Processing in the Error Resolution appendix of the Policy DRA User Guide to investigate and understand the circumstances where the error occurs.
  2. Check the Main Menu > Alarms & Events > View History and set the Display Filter by Events (in particular, 22716 - Policy SBR Audit Statistics Report to find the Session table to see if sessions were removed by audit.
  3. Get the measurement report from Main Menu > Measurements > Report for, but not limited to, measurements SbrExpiredSessionsFound, SbrCreateSessDbErr, and SbrRemSessRarAttempts.
  4. Check if topology hiding applies to the policy client.

    Note: All checks may help to determine whether the session was never created, or was created, but removed by audit.

Parent topic: Policy DRA Error Resolution Procedures