L1 Pairing FAQs



L1 pairing is the comparison by CTM of mandatory minimum set of critical data fields on two sides of a trade. All L1 components must pair before proceeding to L2 matching.

The below table lists the L1 pairing fields on blocks and allocations and whether these fields are mandatory or optional.

Field Name Mandatory/Optional? Further Information
TradeLevel (Block)  
Buy/Sell Indicator  Mandatory  
DealPrice Optional  Available as an optional L1 pairing field. Otherwise CTM uses this field as a tie-breaker.
ExecutingBroker Mandatory CTM supports broker matching groups (BRMGs), a mechanism that automatically selects an executing broker from a preconfigured group.
Instructing Party Mandatory  
QuantityOfTheBlockTrade Mandatory  
SecurityCode Mandatory SecurityCode is a normalized value. CTM cross-references and pairs it with the preferred identifier of your counterparty. Even if the identifiers are different, CTM paris and matchies on values you and your counterparty supply.
TradeDateTime Mandatory CTM pairs on the date component of TradeDateTime only.
TradeDetail (Allocation)
Account ID Mandatory  
QuantityAllocated   CTM uses this field as a tie-breaker