how to open a position in btc and not in const for coin -m?

through the web terminal of the browser in coins, you can open a position in bitcoins and in const. How can I do the same via api request? If so, an example request.
Right now I’m getting the error “code”:-1111,“msg”:“Precision is over the maximum defined for this asset.”
To POST requestххххххх

There are a few filters that clients should follow to place orders. Please find the details from the document:

The specific filter rules can be found from this endpoint: Binance API Documentation

your answer means nothing. I asked why in the terminal you can choose how much to place an order, but there is no such possibility through api.

From API, you can only specify the contract numbers as the parameter “quantity”.

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