Binance API - Account has insufficient balance for requested action

While trying to place an order, I'm receiving the following error:

Code: -2010 Account has insufficient balance for requested action

I'm requesting the POST endpoint https://api.binance.com/api/v3/order with the following parameters:

$params = 
[
    'symbol' => 'BTCUSDT',
    'side' => 'BUY',
    'type' => 'MARKET',
    'quoteOrderQty' => 375.00,
    'timestamp' => $timestamp,
];

And I just deposit 400$, which means I have enough funds to purchase 375$ worth of BTC.

What am I missing?

Solution

I suggest you find your money and convert it to USDT if you want. Check this page using your browser https://binance.com/en/my/wallet/account/main and find what currency do you have now. Keep in mind that USD != USDT