# Diameter Attribute Quick Reference

This appendix presents Diameter attribute quick reference tables.

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.
0-2 | Zero or upto two instances of the AVP MAY be present in the message. If there are more than two instances 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

For the Diameter attribute quick reference tables, click here.