Error in placing GTT order says invalid instrument

Error placing GTT OCO order: {
status: 'error',
message: 'Invalid instrument',
data: null,
error_type: 'InputException'
}.


this is my code




let obj={
trigger_type: 'two-leg', // One Cancels the Other (OCO)
trigger_values: [

slTriggerPrice,

tgtTriggerPrice], // Separate triggers for SL & Target
condition: {
exchange: exchange,
tradingsymbol: tradingSymbol,
trigger_values: [

// slTriggerPrice,
tgtTriggerPrice

],
last_price: last_price, // Approximate last price
},
orders: [
{
transaction_type: kc.TRANSACTION_TYPE_SELL, // Stop Loss Order
order_type: kc.ORDER_TYPE_LIMIT,
price: slPrice, // SL Price
quantity: quantity,
product: product,
exchange: exchange,
}

,
{
transaction_type: kc.TRANSACTION_TYPE_SELL, // Target Order
order_type: kc.ORDER_TYPE_LIMIT,
price: tgtPrice, // Target Price
quantity: quantity,
product: product,
exchange: exchange,
}
]
};

const gttOrder = await kc.placeGTT(

obj

);

my sample order object :

{
trigger_type: 'two-leg',
trigger_values: [ 379.67, 439.62 ],
condition: {
exchange: 'NSE',
tradingsymbol: 'COALINDIA',
trigger_values: [ 379.67, 439.62 ],
last_price: 399.65
},
orders: [
{
transaction_type: 'SELL',
order_type: 'LIMIT',
price: 379.67,
quantity: 1,
product: 'CNC',
exchange: 'NSE'
},
{
transaction_type: 'SELL',
order_type: 'LIMIT',
price: 439.62,
quantity: 1,
product: 'CNC',
exchange: 'NSE'
}
]
} is obj
{
trigger_type: 'two-leg',
trigger_values: [ 379.67, 439.62 ],
condition: {
exchange: 'NSE',
tradingsymbol: 'COALINDIA',
trigger_values: [ 379.67, 439.62 ],
last_price: 399.65
},
orders: [
{
transaction_type: 'SELL',
order_type: 'LIMIT',
price: 379.67,
quantity: 1,
product: 'CNC',
exchange: 'NSE'
},
{
transaction_type: 'SELL',
order_type: 'LIMIT',
price: 439.62,
quantity: 1,
product: 'CNC',
exchange: 'NSE'
}
]
}