Contract sheets. This will respond to your letter of May 28, 1987, and confirm our telephone conversation of the same date concerning recordkeeping of “contract sheets.” You ask whether dealers are required by Board rules G-8 and G-9 to maintain records of “contract sheets” of municipal securities transactions.
Rule G-8(a)(ix) requires dealers to maintain records of all confirmations of purchases and sales of municipal securities, including inter-dealer transactions. Rule G-12(f), in certain instances, requires inter- dealer transactions to be compared through an automated comparison system operated by a clearing agency registered with the Securities and Exchange Commission, rather than by physical confirmations. These automated comparison systems generate “contract sheets” to each party of a trade, which confirm the existence and the terms of the transaction.
This will confirm my advice to you that such contract sheets are deemed to be confirmations of transactions for purposes of rule G-8(a)(ix). Thus, dealers are required to include contract sheets in their records of confirmations and, under rule G-9(b)(v), are required to maintain these records for no less than three years. MSRB interpretation of June 25, 1987.
 Rule G-12(c) governs the content of and procedures for sending physical confirmations.
 You also ask about the interpretation of rules 17a-3 and 17a-4 under the Securities Exchange Act. The Board is not authorized to interpret these Securities and Exchange Commission rules. You may wish to contact the SEC for guidance on this matter.