Place Order

important

• Category (30010) is required and must be spot.
• For market orders, use MarketUnit (30013) to specify whether OrderQty is denominated in base coin or quote coin.
• For limit orders, Price (44) is required.
• When the order is rejected (ExecType=8), the ExecutionReport omits both OrderID (37) and ClOrdID (11) — correlate rejects to requests via ReqId (30006) or by send order.

Message Type

NewOrderSingle — MsgType D

Request Fields

Tag	Field	Required	Type	Description
30010	Category	Y	String	Product type. Currently spot only
55	Symbol	Y	String	Symbol name, e.g. BTCUSDT (uppercase)
54	Side	Y	Char	1 = Buy; 2 = Sell
40	OrdType	Y	Char	1 = Market; 2 = Limit
38	OrderQty	Y	Qty	Order quantity. For market orders, the unit is specified by MarketUnit.
44	Price	N	Price	Order price. Required for Limit orders
11	ClOrdID	N	String	Client order ID (orderLinkId). Max 36 characters. Scoped to account (UID), not session — a ClOrdID held by an active order cannot be reused. ClOrdIDs of terminated orders are eligible for reuse after 360 days.
59	TimeInForce	N	Char	1=GTC; 3=IOC; 4=FOK; P=PostOnly; R=RPI. Defaults to GTC for limit orders. Market orders are always IOC regardless of this field.
30013	MarketUnit	N	String	Unit for OrderQty in market orders: baseCoin (default for sell) or quoteCoin (default for buy)
30014	IsLeverage	N	Boolean	Y = margin trading; N = spot (default)
30018	SmpType	N	String	Self-Match Prevention: None, CancelTaker, CancelMaker, CancelBoth
30019	RpiTakerAccess	N	Boolean	Whether this order may match against RPI quotes. If Y, OrdType must be 1 (Market).
30022	SlippageToleranceType	N	String	Slippage unit for market orders: TickSize or Percent
30034	SlippageTolerance	N	String	Max slippage value, used with SlippageToleranceType
30024	OrderFilter	N	String	Order (default); tpslOrder; StopOrder
99	StopPx	N	Price	Trigger price for conditional orders. The trigger direction (above or below the current price) is determined automatically by the system based on the order side and StopPx relative to the market.
30026	TakeProfitPrice	N	Price	Take profit trigger price
30027	StopLossPrice	N	Price	Stop loss trigger price
30028	TpOrderType	N	String	TP order type when triggered: Market or Limit
30029	SlOrderType	N	String	SL order type when triggered: Market or Limit
30030	TpLimitPrice	N	Price	TP limit price (required when TpOrderType=Limit)
30031	SlLimitPrice	N	Price	SL limit price (required when SlOrderType=Limit)

Response

The server responds with an ExecutionReport (8). The ExecType (150) field indicates the outcome:

ExecType	OrdStatus	Meaning
A (PendingNew)	A (PendingNew)	Order acceptance transitional state, returned immediately after NewOrderSingle; followed by 0 (New) or 8 (Rejected) as the terminal state
0 (New)	0 (New)	Order accepted and resting on the book
F (Trade)	1 / 2	Order immediately filled (partial or full)
8 (Rejected)	8 (Rejected)	Order rejected; see OrdRejReason (103) and Text (58)

Key response fields:

Tag	Field	Description
37	OrderID	Server-assigned order ID. Absent when rejected
11	ClOrdID	Echo of your ClOrdID. Absent on rejection
150	ExecType	Execution event type
39	OrdStatus	Current order status
103	OrdRejReason	Rejection reason code (when ExecType=8)
58	Text	Status text. Typically OK on acceptance; error description on rejection
151	LeavesQty	Remaining unfilled quantity
14	CumQty	Total filled quantity
6	AvgPx	Average fill price
60	TransactTime	Last update time

For fill details when the order is immediately matched (ExecType=F), see ExecutionReport.

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Request Example

8=FIX.4.4|9=238|35=D|34=3|49=FIX_CLIENT|52=20260824-09:27:06.073|56=BYBIT_FIX_SERVER|
30002=1787563626073|30001=5000|
30010=spot|55=BTCUSDT|54=1|40=2|59=1|38=0.001|44=50000|
11=13eafa49-4688-4727-9136-021da28c9d0b|30006=5e14153d-363d-4937-b4ec-f4c64e526979|10=037|

Note: | represents SOH (0x01) in actual wire format.

PendingNew Ack (ExecType=A)

Compact ack delivered immediately after NewOrderSingle is submitted. In OnlyAcks mode this is the only response; in Everything mode it arrives first, followed by the full ExecType=0 (New) report.

• Rate-limit headers (30005 TraceId, 30007 BapiLimit, 30008 BapiLimitStatus, 30009 BapiLimitResetTimestamp) are returned on this initial ack only — subsequent state pushes omit them.
• If the request carried 30006 ReqId, this ack echoes it back (e.g. 30006=5e14153d-...); the subsequent state push does not carry 30006.

8=FIX.4.4|9=269|35=8|34=2|49=BYBIT_FIX_SERVER|52=20260824-09:27:06.329|56=FIX_CLIENT|
30005=3cc714d627c389ed2911d77bc9cc1580|30006=5e14153d-363d-4937-b4ec-f4c64e526979|30007=20|30008=19|30009=1787563626328|
11=13eafa49-4688-4727-9136-021da28c9d0b|37=2288644008836434688|
150=A|39=A|58=OK|10=163|

Response Example (Accepted) (ExecType=0)

In Everything mode, after the PendingNew Ack the server pushes the full New order state via ExecutionReport (35=8). This push carries the full order fields but does not carry rate-limit headers or 30006 ReqId.

8=FIX.4.4|9=359|35=8|34=3|49=BYBIT_FIX_SERVER|52=20260824-09:27:06.333|56=FIX_CLIENT|
11=13eafa49-4688-4727-9136-021da28c9d0b|37=2288644008836434688|150=0|39=0|
30010=spot|55=BTCUSDT|54=1|40=2|38=0.001000|44=50000.0|59=1|30013=UNKNOWN|30014=N|
151=0.001|30041=50.0000000|14=0|30038=0.0000000|
60=20260824-09:27:06.328|30039=20260824-09:27:06.328|
30018=None|30019=N|30046=77286.8|10=085|

Response Example (Rejected) (ExecType=8)

On rejection, 37/11 are absent — correlate by 30006 ReqId or send order. 103 is a Bybit internal error code (e.g. 170140 = order value below the minimum).

8=FIX.4.4|9=248|35=8|34=2|49=BYBIT_FIX_SERVER|52=20260824-09:52:16.540|56=FIX_CLIENT|
30005=748c8e5b5094fd0e22cdac8441066c87|30006=6dac881c-8f85-4272-8e31-2917612d788e|30007=20|30008=19|30009=1787565136538|
150=8|39=8|103=170140|58=Order value exceeded lower limit.|10=239|