Financial Trading

Hi there! A quick refresher course for me with respect to French derivatives
trading (not a bank). In transacting with a French corporate, should we
request articles and bylaws for capacity and ALSO a due authorization
opinion? I think that this is correct. However, if we are transacting with
an "S.A.", we should NOT request articles and bylaws but only the due
authorization opinion. My notes on these items are confusing. Could you
please respond in the morning? Thanks. Sara

p.s. We are currently operating under the "one Transaction rule" with French
non-bank entities in order to avoid the netting problem.