Replace Algo Order

Rate Limit: 3 requests per 10 seconds

Amend an existing algorithmic order — update its quantity, conditional trigger price, or TP/SL parameters. The algo order ID remains unchanged. Monitor the ALGO_ORDER push channel to confirm the amendment has taken effect.

Rate Limit: 3 requests per 10 seconds

---

Request

Identify the order using either algoOrderId or clientOrderId. Only include the fields you want to change — any field you omit keeps its current value.

JSON

{
  "id": "ws-1735611102",
  "action": "replace_algo_order",
  "args": {
    "algoOrderId": "",
    "clientOrderId": "1737615509395024000",
    "orderQty": "0.01",
    "tpTriggerPrice": "632",
    "tpTriggerType": "MARK_PRICE",
    "tpPrice": "732.1",
    "slTriggerPrice": "742",
    "slTriggerType": "LAST_PRICE",
    "slPrice": "0"
  }
}

Field	Type	Required	Description
id	String	N	Client-defined request ID. Echoed back in the response.
action	String	Y	Must be replace_algo_order.
args	Object	Y	Replace parameters.
> algoOrderId	String	N	LTP-assigned algo order ID to amend.
> clientOrderId	String	N	Your own order ID to amend. Only lowercase letters (a-z) and digits (0-9).
> orderQty	String	N	New order quantity.
> conditionalTriggerPrice	String	N	New conditional trigger price.
> conditionalTriggerType	String	N	Price type for the conditional trigger: LAST_PRICE or MARK_PRICE.
> conditionalPrice	String	N	New limit price after trigger fires. "0" means market price.
> tpTriggerPrice	String	N	New take-profit trigger price.
> tpTriggerType	String	N	Price type for the take-profit trigger: LAST_PRICE or MARK_PRICE (default: LAST_PRICE).
> tpPrice	String	N	New take-profit execution price. "0" means market price.
> slTriggerPrice	String	N	New stop-loss trigger price.
> slTriggerType	String	N	Price type for the stop-loss trigger: LAST_PRICE or MARK_PRICE (default: LAST_PRICE).
> slPrice	String	N	New stop-loss execution price. "0" means market price.

---

Response

Success:

JSON

{
  "id": "XXXX",
  "event": "replace_algo_order",
  "code": 0,
  "msg": "",
  "data": {
    "algoOrderId": "XXXXX",
    "clientOrderId": "XXXXX"
  }
}

Failure:

JSON

{
  "id": "***",
  "event": "error",
  "code": "60009",
  "msg": "Create order failed."
}

code: 0 means LTP has accepted the replace request. The algo order ID is unchanged — replace does not create a new order. Monitor the ALGO_ORDER push channel to confirm the updated parameters are in effect.

Field	Type	Description
id	String	Echoed client request ID.
event	String	replace_algo_order on success, error on failure.
code	Long	0 = replace request accepted. Any other value indicates an error — check msg for the reason.
msg	String	Empty on success, or an error message on failure.
data	Object	Present on success only.
> algoOrderId	String	Algo order ID. Unchanged from the original order.
> clientOrderId	String	Your own order ID, if one was assigned.