======VasExperts-Acct-Terminate-Cause Attributes and Their Values======
Session termination reasons. All IDs must be sequential, starting from 0 — used in PCRF as an array index for transcoding.

  * ''acct_stop_reason_unspecified'' (0) — reason not explicitly specified.
  * ''acct_stop_reason_user_request'' (1) — explicit session termination by subscriber request or when creating a new session.
  * ''acct_stop_reason_idle_timeout'' (2) — session termination due to inactivity timeout.
  * ''acct_stop_reason_session_expired'' (3) — session termination due to allocated session time expiration.
  * ''acct_stop_reason_admin_reset'' (4) — termination by admin request (CoA Disconnect-Request).
  * ''acct_stop_reason_lost_service'' (5) — closure due to DHCP-NAK or service 9 deactivation.
  * ''acct_stop_reason_NAS_error'' (6) — errors detected in the request.
  * ''acct_stop_reason_double_secondary_key'' (7) — session termination with the same unique secondary key.
  * ''acct_stop_reason_coa_reauth'' (8) — reauthorization using CoA.
  * ''acct_stop_reason_callback'' (9) — Stop current session due to reauthorization.
  * ''acct_stop_reason_no_auth_response'' (10) — no response to authorization request.
  * ''acct_stop_reason_NAS_switch'' (11) — switching to another SSG.
  * ''acct_stop_reason_CoA_Disconnect'' (12) — termination via CoA disconnect.
  * ''acct_stop_reason_source_reboot'' (13) — fastDPI restart detected by counter value decrease [fastPCRF].
  * ''acct_stop_reason_change_session_id'' (14) — sessionId change [fastPCRF].
  * ''acct_stop_reason_transfer_session_id'' (15) — transferring sessionId to another IP [fastPCRF].
  * ''acct_stop_reason_fastdpi_acct_on'' (16) — FastDPI sent Acct-On/Acct-Off [fastPCRF].
  * ''acct_stop_reason_suspended'' (17) — session moved to "suspended" state due to lost connection with RADIUS server [fastPCRF].
  * ''acct_stop_reason_ppp_changed_IPv6_prefix'' (18) — ppp Pool DHCPv6 Renew returned a different prefix.
  * ''acct_stop_reason_ppp_missing_IPv6_prefix'' (19) — ppp Pool DHCPv6 Renew did not return a prefix.