Dear Sir/Madam,
We are giving below the list of outstanding invoice(s) as on Sep 30, 2016.
These details are for your Finance and accounts department, so that they can take care of necessary provision and TDS / Service tax related matters.
We request you forward this mail to your Accounts Department, with a cc to all of us, for Balance confirmation as on Sep 30, 2016 and the receipt of the above invoice(s) and most importantly they can get back to us with confirming that balance or get back to us for any other clarification if required.