Diameter Attribute Quick Reference This appendix presents Diameter attribute quick reference tables. The Diameter attribute tables are listed here. The following table describes the indicators used in the quick reference tables. 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 tables. 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