Detailed description of the order statuses in the FastConnect system and the transition flow between them.

Order Status Flow

Overview

Every order placed through the FastConnect API goes through different statuses during its lifecycle. This document describes the meaning of each status and the transition flow between them.

Status Diagram

Status Table

#	FC Status	Full Name	Description
1	`PD`	Pending	Acknowledged status — the base order has been accepted into the system.
2	`RS`	Ready to Send	The order is ready to be sent to the exchange.
3	`SD`	Sent to Exchange	The order has been sent to the exchange (applies to session orders).
4	`QU`	Queue in Exchange	The order is waiting to be matched at the exchange.
5	`WA`	Waiting Approval	The order is awaiting approval.
6	`FF`	Fully Filled	The order has been fully filled. End state.
7	`PF`	Partially Filled	The order has been partially filled; the remaining quantity continues to wait to be matched.
8	`FFPC`	Fully Filled Partially Cancelled	The order has been partially filled and the remaining quantity has been cancelled. End state.
9	`WM`	Waiting Modify	The order is awaiting modification (price or quantity).
10	`WC`	Waiting Cancel	The order is awaiting cancellation.
11	`CL`	Cancelled	The order has been cancelled successfully. End state.
12	`RJ`	Rejected	The order was rejected (ineligible, invalid parameters, etc.). End state.
13	`EX`	Expired	The order has expired or was rejected by the exchange. End state.
14	`IAV`	PreSessionOrder	Pre-session order (PS order) — placed before trading hours, waiting to be sent when the session opens.
15	`SOI`	PreSessionStopOrder	Pre-session stop order — a stop order placed before trading hours.
16	`PAS`	WaitingApprovalStopOrder	A stop order awaiting approval.

Detailed Transition Flow

Placing a New Order

When a consumer sends an order placement request, the system records the order with the status:
- PD (Pending) for a base order
- IAV (PreSessionOrder) for a pre-session order
The order transitions to RS (Ready to Send) when it is ready to be sent to the exchange.
If it is ineligible (insufficient margin, invalid parameters, room violation, etc.) → RJ (Rejected).
The order is sent to the exchange → SD (Sent to Exchange), then queued to wait for matching → QU (Queue in Exchange).

Order Matching

Fully filled → FF (Fully Filled). End.
Partially filled → PF (Partially Filled). The remaining quantity continues to wait to be matched.

Modifying an Order

From the QU or PF status, the consumer can send an order modification request.
The order transitions to WM (Waiting Modify).
When the modification succeeds, the order returns to its previous status (QU or PF) with the updated information.

Cancelling an Order

From the QU status: cancel the order → WC (Waiting Cancel) → CL (Cancelled). End.
From the PF status: cancel the remaining quantity → WC → FFPC (Fully Filled Partially Cancelled). End.

Expiration

An order rejected at the exchange → EX (Expired). End.
A partially filled order (PF) that reaches the end of its validity period → FFPC. End.

End States

Status	Meaning
`FF`	The order was fully filled — the trade is complete.
`FFPC`	The order was partially filled; the remaining quantity was cancelled or expired.
`CL`	The order was fully cancelled.
`RJ`	The order was rejected from the outset.
`EX`	The order expired or was rejected by the exchange.

Order Status Flow

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