I have a problem MIN_NOTIONAL

[RemizovAnton]

$symbol = 'DGBUSDT';
$bookPrices = $api->bookPrices();
$ex_rate = $bookPrices[$symbol]['ask'];
$quantity = 20;
$price = $ex_rate;
$order = $api->sell($symbol, $quantity, $price);

Have error:

Fatal error: Uncaught Exception: signedRequest error: {"code":-1013,"msg":"Filter failure: MIN_NOTIONAL"}

Please, can you help me, what am I doing wrong?

[OROCHI_DZ]

try this :

$symbol = 'DGBUSDT';
$symbol = trim($symbol );
$bookPrices = $api->bookPrices();
$ex_rate = $bookPrices[$symbol]['ask'];
$quantity = 20;
$price = $ex_rate;
$order = $api->sell($symbol, $quantity, $price);

[Néstor Pons]

Only this answer? This answer no found
Please i have same problem.