When is the Related Market Center indicator required?
A405.1: Members must use the Related Market Center (RMC) indicator when submitting a non-tape report for the offsetting leg of a riskless principal or agency transaction to a FINRA Facility that is related to a tape report that was not submitted to that same FINRA Facility. The RMC indicator identifies the market or facility where the associated tape report was submitted. See Regulatory Notice 09-54 (September 2009) and Trade Reporting Notice 2/8/2010.