Order Cancel Replace Request

Amend a working order via FIX (Spot only)

FIXsession: trading35=G

The Order Cancel-Replace Request message (MsgType=G) is used by the Client to amend the replaceable fields of working orders which are Quantities and Prices. A successful order replacement request will result in an execution report with the OrdStatus.

This message is available for Spot only.

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header · required

35=G

11 - ClOrdID · string · required

Unique identifier of the order. The ID can be one of the following formats:

• Ever-Increasing Positive Numbers: Ever-increasing positive numbers, such as microsecond timestamps, to ensure the uniqueness and sequential nature of the identifiers. Example: Using the current microsecond timestamp as the ClOrdID, such as 1623448294234000 (Max 18 characters)
• Timestamp-First v4 UUIDs: A timestamp-first v4 UUID might look like 1b4e28ba-2fa1-11d2-883f-0016d3cca427, where the initial part (1b4e28ba-2fa1) of the UUID represents the timestamp. The timestamp granularity to generate the first part needs to be 10 microseconds maximum such as 162344829423400.

37 - OrderID · string · required

OrderID to be amended; needs to match the one received on the ExecutionReports.

41 - OrigClordid · string · required

Reference the Last ClOrdID used.

54 - Side · integer · required

Side of the order.

Possible values:

• 1 : Buy
• 2 : Sell

55 - Symbol · string · required

Pair in the format BASE/QUOTE.

60 - TransactTime · string · required

Time of order cancellation expressed in UTC. Format: YYYYMMDD-HH:MM:SS.uuu

38 - OrderQty · float · required

Size of the order.

1138 - DisplayQty · float

Maximum qty shown in the market at any point in time for iceberg orders.

40 - OrderType · char · required

The execution model of the order.

Possible values:

• 1 : market
• 2 : Limit
• 3 : Stop-loss
• 4 : Stop-loss-limit
• R : Take-profit
• T : Take-profit-limit
• U : Trailing-stop
• V : Trailing-stop-limit

59 - TimeInForce · string · required

Time-in-force specifies how long an order remains in effect before being expired.

Possible values:

• 1 : GTC (Good till canceled)
• 3 : IOC (Immediate or Cancel)
• 6 : GTD (Good till date)

44 - Price · float

Limit Price of the order to be placed in the Order Book. This field is denominated in Quote Currency.

Condition: OrderType = Limit / Stop-Loss-Limit / Take-Profit-Limit / Trailing-stop-limit

99 - StopPx · float

Defines the trigger price of the order. This field is denominated in Quote Currency.

Condition: OrderType = Stop-Loss / Take-Profit / Stop-Loss-Limit / Trailing-stop / Trailing-stop-limit

18 - ExecInst · char

Enable clients to place order using the Post-Only safeguard.

Possible values:

• P : Post-Only — Cancels the order if it will take liquidity on arrival. Post only orders will always be posted passively in the book.

62 - ValidUntilTime · string

The engine will reject any order entered into the matching engine after this time. This provides extra protection against latency on time sensitive orders. The timestamp should be at least 2 seconds and at most 60 seconds in the future. Format: YYYYMMDD-HH:MM:SS.uuu

trailer · required

Amend Price and Qty (client → server)

8=FIX.4.4|9=191|35=G|34=3|49=CLIENT|56=KRAKEN-TRD|52=20260407-14:32:10.000|11=1744036325100000|37=OQNCZM-NVAVC-AVD2LO|41=1744036325000000|54=1|55=BTC/USD|60=20260407-14:32:10.000|38=0.002|40=2|44=83500|59=1|10=083|