Modify OCO Order

You want the Overview/Key-benefits intro block adapted for Modify and Cancel individually, rather than one shared Overview covering all three. Here they are:

Overview

The Modify OCO Order API lets you update the trigger price, limit price, or quantity of an existing OCO order pair without cancelling and re-placing it. This is used when market conditions move and your original stop-loss/target levels need adjusting while keeping the same order pair active.

Key benefits:

• In-Place Adjustment: Update both legs of an existing OCO order in a single call instead of cancelling and placing a new pair.
• Re-Validated Against Live Market: The API re-checks that your updated trigger prices still straddle the current market price before accepting the change.
• Preserves Order Identity: The order keeps the same OCOid after modification, so downstream tracking and reconciliation remain unaffected.

Endpoint & Method

URL:

https://api.firstock.in/V1/modifyOcoOrder

Headers:

Body:

Request:

{
  "userId": "{{userId}}",
  "jKey": "{{jKey}}",
  "OCOid": "26100600000035",
  "exchange": "NSE",
  "tradingSymbol": "VIKASECO-EQ",
  "OrderParamsLeg1": {
    "transactionType": "S",
    "priceType": "LMT",
    "product": "C",
    "retention": "DAY",
    "triggerPrice": "0.93",
    "quantity": "1",
    "price": "0.92"
  },
  "OrderParamsLeg2": {
    "transactionType": "S",
    "priceType": "LMT",
    "product": "C",
    "retention": "DAY",
    "triggerPrice": "1.15",
    "quantity": "1",
    "targetPrice": "1.16"
  }
}

Example Usage

curl --location 'https://api.firstock.in/V1/modifyOcoOrder' \
--header 'Content-Type: application/json' \
--data '{
  "userId": "{{userId}}",
  "jKey": "{{jKey}}",
  "OCOid": "26100600000035",
  "exchange": "NSE",
  "tradingSymbol": "VIKASECO-EQ",
  "OrderParamsLeg1": {
    "transactionType": "S",
    "priceType": "LMT",
    "product": "C",
    "triggerPrice": "0.93",
    "quantity": "1",
    "price": "0.92"
  },
  "OrderParamsLeg2": {
    "transactionType": "S",
    "priceType": "LMT",
    "product": "C",
    "triggerPrice": "1.15",
    "quantity": "1",
    "targetPrice": "1.16"
  }
}'

Response

{
  "status": "success",
  "message": "OCO order modified",
  "data": {
    "OCOid": "26100600000035",
    "Status": "OI replaced"
  }
}

{
  "status": "failed",
  "code": "400",
  "name": "BAD_REQUEST",
  "error": {
    "field": "triggerPrice",
    "message": "One leg trigger price must be above LTP and the other below LTP"
  }
}