Error 404 while access option chain API

Developer API
5

An underlying stock instrument key is required, but you are entering the option contract instrument key, as indicated below:

 {
        "weekly": false,
        "segment": "NSE_FO",
        "name": "RELIANCE INDUSTRIES LTD",
        "exchange": "NSE",
        "expiry": 1714069799000,
        "instrument_type": "CE",
        "asset_symbol": "RELIANCE",
        "underlying_symbol": "RELIANCE",
        "instrument_key": "NSE_FO|129973",
        "lot_size": 250,
        "freeze_quantity": 7500.0,
        "exchange_token": "129973",
        "minimum_lot": 250,
        "asset_key": "NSE_EQ|INE002A01018",
        "underlying_key": "NSE_EQ|INE002A01018",
        "tick_size": 5.0,
        "asset_type": "EQUITY",
        "underlying_type": "EQUITY",
        "trading_symbol": "RELIANCE 2600 CE 25 APR 24",
        "strike_price": 2600.0
    }

Refer to the underlying stock detailed below:

{
        "segment": "NSE_EQ",
        "name": "RELIANCE INDUSTRIES LTD",
        "exchange": "NSE",
        "isin": "INE002A01018",
        "instrument_type": "EQ",
        "instrument_key": "NSE_EQ|INE002A01018",
        "lot_size": 1,
        "freeze_quantity": 100000.0,
        "exchange_token": "2885",
        "tick_size": 5.0,
        "trading_symbol": "RELIANCE",
        "short_name": "Reliance Industries",
        "security_type": "NORMAL"
    }

Use the following URL when you fetch the option for the trading symbol “RELIANCE”:

https://api.upstox.com/v2/option/chain?instrument_key=NSE_EQ|INE002A01018&expiry_date=2024-04-25