Hi, jcl, let me try to describe this problem more clearly.

Now I am using Binance which has 3 trading accounts:
- Spot: its API endpoint for new order is /api/v3/order
- Margin: its API endpoint for new order is /sapi/v1/margin/order
- Futures: its API endpoint for new order is /fapi/v1/order

An API key can be created to trade for all the above 3 accounts via setting its "API restrictions", like:
- "Enable Margin"
- "Enable Future"

I found that the balance displayed in Zorro is only the balance of Spot account and using "TradeTest" Script to test "Buy Short", it will failed with messages:{ "code":-2010,"msg":"Account has insufficient balance for requested action."}.
And I also created separate keys which were only enabled for Spot or Margin or Future trading.
But they are the same. It seems Zorro Binance plugin only support the Spot API, the same with the Binance Zorro plugin' doc:
> Only long positions are supported; for short trades the account must already contain a sufficient position of the asset. Otherwise an error message like INSUFFICIENT FUNDS is issued.

Has Binance Zorro plugin already implemented the Margin API and Futures API?
Thanks.