A.16 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 - 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 and Charging Application User Guide to investigate and understand the circumstances where the error occurs.
2. Check the Main Menu, and then Alarms & Events, and then View History and set the Display Filter by Events (in particular, 22716 - 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, and then Measurements, and then 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.