Diameter Attribute Quick Reference Table This appendix presents Diameter attribute quick reference table. The following table describes the indicators used in the quick reference table. Indicator Description 0 The AVP MUST NOT be present in the message. 0+ Zero or more instances of the AVP MAY be present in the message. 0-1 Zero or one instance of the AVP MAY be present in the message. If there are more than one instance of the AVP, it is considered an error. 1 One instance of the AVP MUST be present in the message. 1+ At least one instance of the AVP MUST be present in the message. The following table describes the column headers in the quick reference table. Term Expansion Term Expansion ACA AC-Answer MEICR ME-Identity-Check-Request ACR AC-Request MAA Multimedia-Auth-Answer ASA Abort-Session-Answer MAR Multimedia-Auth-Request ASR Abort-Session-Request NA Notify-Answer AIA Authentication-Information-Answer NR Notify-Request AIR Authentication-Information-Request PUA Profile-Update-Answer AAA Authorization-Authentication-Answer PUR Profile-Update-Request AAR Authorization-Authentication-Request PUAM Purge-UE-Answer-MME CLA Cancel-Location-Answer PURM Purge-UE-Request-MME CLR Cancel-Location-Request PPA Push-Profile-Answer CEA Capabilities-Exchange-Answer PPR Push-Profile-Request CER Capabilities-Exchange-Request RAA Re-Auth-Answer CCA Credit-Control-Answer RAR Re-Auth-Request CCR Credit-Control-Request RTA Registration-Termination-Answer DSDA Delete-Subscriber-Data-Answer RTR Registration-Termination-Request DSDR Delete-Subscriber-Data-Request RA Reset-Answer DWA Device-Watchdog-Answer RR Reset-Request DWR Device-Watchdog-Request SAA Server-Assignment-Answer DEA Diameter-EAP-Answer SAR Server-Assignment-Request DER Diameter-EAP-Request STA Session-Termination-Answer DPA Disconnect-Peer-Answer STR Session-Termination-Request DPR Disconnect-Peer-Request ULA Update-Location-Answer ISDA Insert-Subscriber-Data-Answer ULR Update-Location-Request ISDR Insert-Subscriber-Data-Request UAA User-Authorization-Answer LIA Location-Info-Answer UAR User-Authorization-Request LIR Location-Info-Request UDA User-Data-Answer MEICA ME-Identity-Check-Answer UDR User-Data-Request Click here to view the quick reference table.