Converting dust to BNB at Cross Margin

Hey guys!
The documentation implies that the “transfer_dust” function supposed to work for Cross Margin and Spot, but when I try to use it to convert dust assets left at my cross margin account, I get “APIError(code=-1102): illegal parameter”.
Did someone ever encounter this issue?

example of use (Python):
[asset for asset in client.get_margin_account()["userAssets"] if asset["free"] != '0']
[{‘asset’: ‘BTC’,
‘free’: ‘0.00000804’,
‘locked’: ‘0’,
‘borrowed’: ‘0.00001079’,
‘interest’: ‘0’,
‘netAsset’: ‘-0.00000275’},
{‘asset’: ‘ALGO’,
‘free’: ‘0.796’,
‘locked’: ‘0’,
‘borrowed’: ‘0’,
‘interest’: ‘0’,
‘netAsset’: ‘0.796’},
{‘asset’: ‘MANA’,
‘free’: ‘0.141301’,
‘locked’: ‘0’,
‘borrowed’: ‘0.141301’,
‘interest’: ‘0’,
‘netAsset’: ‘0’},
{‘asset’: ‘ETH’,
‘free’: ‘0.0000892’,
‘locked’: ‘0’,
‘borrowed’: ‘0’,
‘interest’: ‘0’,
‘netAsset’: ‘0.0000892’},
{‘asset’: ‘USDT’,
‘free’: ‘91.50358486’,
‘locked’: ‘0’,
‘borrowed’: ‘0’,
‘interest’: ‘0’,
‘netAsset’: ‘91.50358486’}]


Traceback (most recent call last):
File “/Users/omerkakun/opt/miniconda3/envs/conda_fr/lib/python3.7/site-packages/IPython/core/”, line 3437, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)
File “”, line 1, in
File “/Users/omerkakun/opt/miniconda3/envs/conda_fr/lib/python3.7/site-packages/binance/”, line 2314, in transfer_dust
return self._request_margin_api(‘post’, ‘asset/dust’, True, data=params)
File “/Users/omerkakun/opt/miniconda3/envs/conda_fr/lib/python3.7/site-packages/binance/”, line 364, in _request_margin_api
return self._request(method, uri, signed, **kwargs)
File “/Users/omerkakun/opt/miniconda3/envs/conda_fr/lib/python3.7/site-packages/binance/”, line 315, in _request
return self._handle_response(self.response)
File “/Users/omerkakun/opt/miniconda3/envs/conda_fr/lib/python3.7/site-packages/binance/”, line 324, in _handle_response
raise BinanceAPIException(response, response.status_code, response.text)
binance.exceptions.BinanceAPIException: APIError(code=-1102): illegal parameter

thanks for the feedback, could you please print out the original request sent to the API server.