status: 400, error code: -1111, error message: Precision is over the maximum defined for this asset.

API Futures API
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1

hello

i’m trying create order with library

my request

um_futures.new_order(
            symbol="SOLUSDT",
            side="SELL",
            type="MARKET",
            positionSide="SHORT",
            quantity=qnt,
        )

how i’m counting qnt:

i get price

price=Decimal(get_price_ticker("SOLUSDT"))

count my order_amount from usdt like this, where USDT = 40

order_amount = Decimal(USDT) / price

get stepSize
stepSize = Decimal(get_stepSize("SOLUSDT"))
return 0.01000000 for SOLUSDT

count precision
precision = int(round(-math.log(stepSize, 10), 0))
return 2

and then counting
quantity = "{:0.0{}f}".format(order_amount, precision)
return 0.93 for now

and put it in new order like qnt

get error message

status: 400, error code: -1111, error message: Precision is over the maximum defined for this asset.

can u help me please?

2

is the connector for Spot only. if you are looking for place order in futures, please check this futures connector:

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