Error - bracket order error while selling

Alpaca Trading
1

Hello all,
I am beginner trying to place some paper trades based on tradingview webhook alerts.

The code tries to sell a position and then buy back when price falls by 50% with a stop price when price increases by 15%.

The code executes but I get an error - bracket orders must be entry orders.

Any help will be appreciated. Thanks.

 api.submit_order(
        symbol=webhook_message['ticker'],
        side='sell',
        type='limit',
        limit_price=webhook_message['close'],
        qty=1,
        time_in_force='gtc',
        order_class='bracket',
        take_profit=dict(limit_price=webhook_message['close'] * 0.50,
                         ),
        stop_loss=dict(stop_price=webhook_message['close'] * 1.15,
                       limit_price=webhook_message['close'] * 1.15,
                       )
    )
2

The main order in bracket order can be only market. At least for now according to the documentation page.