[ by Howard Haykin ] Brokers, dealers and municipal securities dealers of an upcoming change to MSRB transaction repor ting requirements planned for November 2012.  The change would require dealers to report for inter-dealer transactions - in addition to the information currently reported – the contractual dollar price at which the transaction was executed.  All dealers that report inter-dealer transactions to the MSRB RTRS will need to make system and/or procedural changes to prepare for this change. BACKGROUND. MSRB Rule G-14 requires dealers to report information about each purchase and sale transaction effected in municipal securities to RTRS.  Inter-dealer transaction reporting is accomplished by both the purchasing and selling dealers submitting information about the transaction to the DTCC's Real-Time Trade Matching System (RTTM). Information submitted to RTTM is forwarded to RTRS for trade reporting.  For most inter-dealer transactions, dealers report final money, par amount and accrued interest to RTTM – as opposed to a dollar price and yield as is done for customer trades - and RTRS computes a dollar price from these values for inter-dealer transaction price dissemination.  The information reported for inter-dealer transactions also is used by DTCC for purposes of clearance and settlement, and DTCC procedures require dealers to report par value as an expression of the number of bonds traded as opposed to the actual par amount traded. The MSRB Notice also covers reporting of securities that are no longer a $1,000 multiple because, for example, the issuer has prepaid a portion of the principal on a security on a pro rata basis.  You're encouraged to read the notice for this particular information. For further details, go to:  [MSRB Notice 12-30, 6/4/12].