Sell returning "preview invalid base size too small"

Advanced Trade API
1

Hi,

I tried to submit the following sell for SOL-GBP:

POST /api/v3/brokerage/orders
{
    "client_order_id": "my-client-order-id",
    "product_id": "SOL-GBP",
    "side": "SELL",
    "order_configuration": {
      "market_market_ioc": {
        "base_size": "0.03871609"
      }
    }
  }

but it returns:

{
  "success": false,
  "failure_reason": "UNKNOWN_FAILURE_REASON",
  "order_id": "",
  "error_response": {
    "error": "UNKNOWN_FAILURE_REASON",
    "message": "",
    "error_details": "",
    "preview_failure_reason": "PREVIEW_INVALID_BASE_SIZE_TOO_SMALL"
  },
  "order_configuration": {
    "market_market_ioc": {
      "base_size": "0.03871609"
    }
  }
}

This is about 2 GBP’s worth. However it let me place a buy order for exactly 2 GBP’s worth.

Can anyone please tell me how I can find out what the minimum sale order is? Ideally by querying the API.
Thanks

2

Use Get Product endpoint? Look for base_increment and base_min_size.

{"product_id":"SOL-GBP","price":"52.79","price_percentage_change_24h":"-7.45091164095372","volume_24h":"34107.541","volume_percentage_change_24h":"-13.01018448475413","base_increment":"0.001","quote_increment":"0.01","quote_min_size":"1","quote_max_size":"10000000","base_min_size":"0.08","base_max_size":"60000","base_name":"Solana","quote_name":"British Pound","watched":false,"is_disabled":false,"new":false,"status":"online","cancel_only":false,"limit_only":false,"post_only":false,"trading_disabled":false,"auction_mode":false,"product_type":"SPOT","quote_currency_id":"GBP","base_currency_id":"SOL","fcm_trading_session_details":null,"mid_market_price":"","alias":"","alias_to":[],"base_display_symbol":"SOL","quote_display_symbol":"GBP","view_only":false,"price_increment":"0.01"}

Looks like minimum size is 0.08 and max precision you can use is up to 3 decimal places.

In Pro minimum size limit was removed, you can check this.

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