Error Code 523

Associated Error Category: CC-Request-Type AVP is missing from CCR message
Description: CC-Request-Type AVP is missing from CCR message
Associated P-DRA Alarm/Event: Event 22700 - Protocol errors in Diameter Requests (refer to the DSR Alarms and KPIs Reference for details about this event)
Associated Measurement: RxPdraRequestProtocolErr
Associated Diameter Interface / Message Type: Gx CCR-I, CCR-U, and CCR-T
GUI Configurable: No (Result Code 5005)

Recovery

Check CCR Processing in the Error Resolution appendix of the Policy and Charging Application User Guide to investigate and understand the circumstances where the error occurs.
Go to the Policy DRA SOAM GUI at Main Menu > Alarms & Events > View History and set the Display Filter by Event (in particular, 22700 - Protocol errors in Diameter Requests).
Use the Origin-Host value of the received Request found in 22700 - Protocol errors in Diameter Requests to understand from where the Request was sent.
Get the measurement report from Main Menu > Measurements > Report for, but not limited to, "Diameter Exception," "DSR Application Exception," and "Policy DRA Diameter Exception" Measurement Groups.