generated: '2026-07-19'
method: searched
source: https://docs.electronx.com/fix-guide
note: >-
  Cross-cutting protocol semantics for the ElectronX FIX API. This is a FIX
  exchange, not an HTTP/REST API, so conventions are expressed in FIX terms
  (sessions, sequence numbers, order identity) rather than HTTP headers/pagination.
protocol:
  session_layer: FIXT.1.1
  application_layer: FIX 5.0 SP2
  sessions:
  - Order Entry
  - Market Data
  - Drop Copy
authentication:
  summary: SenderCompID + SSL/TLS per session; see authentication/electronx-authentication.yml
  ref: authentication/electronx-authentication.yml
session_management:
  heartbeat_interval_seconds: 30
  sequence_numbers:
    reset: weekly
    when: Sundays 06:15 UTC
    reset_to: 1
    flag: ResetSeqNumFlag=Y
  session_messages:
  - Logon (35=A)
  - Logout (35=5)
  - Heartbeat (35=0)
  - ResendRequest (35=2)
order_identity:
  client_order_id: ClOrdID
  note: >-
    Orders are identified by a client-assigned ClOrdID; OrderCancelRequest (35=F)
    and OrderCancelReplaceRequest (35=G) reference the original order. ClOrdLinkID
    can group related orders (used by mass cancel filtering). FIX ClOrdID is an
    order-identity convention, not an HTTP idempotency-key replay contract.
cancel_policies:
  cancel_on_disconnect:
    description: DAY orders auto-cancel if a session drops unexpectedly; GTC orders persist.
  cancel_on_logout:
    description: Same behavior as Cancel on Disconnect when sending a clean Logout.
mass_operations:
  mass_cancel:
    message: OrderMassCancelRequest
    report: OrderMassCancelReport
    filters:
    - instrument
    - account
    - account + ClOrdLinkID
    - entire FIX session
  mass_quote_protection:
    description: >-
      Auto-cancels an account's remaining resting orders when executions reach a
      configured quantity within a rolling time window.
error_semantics:
  order_rejection: ExecutionReport (35=8) carries fills, confirmations, cancellations, and rejections.
  ref: errors/ (no separate error catalog published; rejections surface on ExecutionReport)
versioning:
  ref: changelog/electronx-changelog.yml
  scheme: dated product releases
connectivity:
  note: >-
    Gateway hostnames/ports are firm-specific and delivered privately in a FIX
    Connectivity Details document during provisioning; not published publicly.