| ISO20022

MT546: (9) Field 20a: Reference

FORMAT

Option C	:4!c//16x	(Qualifier)(Reference)
Option U	:4!c//52x	(Qualifier)(UTI Reference)

PRESENCE

Mandatory in mandatory subsequence A1

QUALIFIER

(Error code(s): T89)

Order	M/O	Qualifier	R/N	CR	Options	Qualifier Description
1	M	CMIT	N		C	Counterparty Market Infrastructure Transaction Identification
	or	POOL	N		C	Pool Reference
	or	PREV	N	C6	C	Previous Message Reference
	or	RELA	N	C8	C	Related Message Reference
	or	TRRF	N		C or U	Deal Reference
	or	COMM	N		C	Common Reference
	or	COLR	N		C	Collateral Reference
	or	CERT	N		C	Certification Reference
	or	CORP	N		C	Corporate Action Reference
	or	TCTR	N		C	Triparty-Agent's/Service-Provider's Collateral Transaction Reference
	or	CLTR	N		C	Client's Triparty Collateral Transaction Reference
	or	CLCI	N		C	Client's Collateral Instruction Reference
	or	TRCI	N		C	Triparty-Agent's/Service-Provider's Collateral Instruction Reference
	or	MITI	N		C	Market Infrastructure Transaction Identification
	or	PCTI	N		C	Processor Transaction Identification

DEFINITION

This qualified generic field specifies:

CERT	Certification Reference	Reference assigned to a deposit.
CLCI	Client's Collateral Instruction Reference	Reference assigned to the instruction by the client.
CLTR	Client's Triparty Collateral Transaction Reference	Unique reference identifying the triparty collateral management transaction from the client's point of view.
CMIT	Counterparty Market Infrastructure Transaction Identification	Identification of a counterparty transaction assigned by a market infrastructure other than a central securities depository, for example, Target2-Securities.
COLR	Collateral Reference	Reference assigned to a collateral transaction linked to the settlement transaction.
COMM	Common Reference	Unique reference agreed upon by the two trade counterparties to identify the trade.
CORP	Corporate Action Reference	Reference assigned by the account servicer to unambiguously identify a related corporate action event.
MITI	Market Infrastructure Transaction Identification	Identification of a transaction assigned by a market infrastructure other than a central securities depository, for example, Target2-Securities.
PCTI	Processor Transaction Identification	Identification of the transaction assigned by the processor of the instruction other than the account owner the account servicer and the market infrastructure.
POOL	Pool Reference	Collective reference identifying a set of messages.
PREV	Previous Message Reference	Message reference of the linked message which was previously sent.
RELA	Related Message Reference	Message reference of the linked message which was previously received.
TCTR	Triparty-Agent's/Service-Provider's Collateral Transaction Reference	Unique reference identifying the triparty-agent/service-provider collateral management transaction from the triparty-agent's/service-provider's point of view.
TRCI	Triparty-Agent's/Service-Provider's Collateral Instruction Reference	Reference assigned to the instruction by the triparty-agent/service-provider.
TRRF	Deal Reference	Reference assigned to the trade by the Investment Manager OR the Broker/Dealer. This reference will be used throughout the trade life cycle to access/update the trade details.

NETWORK VALIDATED RULES

Reference must not start or end with a slash '/' and must not contain two consecutive slashes '//'.

USAGE RULES

When no reference is available for the instruction, for example, the instruction was sent by fax, the Related Reference (RELA) must be :20C::RELA//NONREF.

POOL and COMM references must not appear more than once in the message.

Market Practice Rules

Linkages:
A global market practice for the use of the linkage sequence and references exists for various business scenarios such as cancellations, settlement confirmation but also more complex processes like pair-off, back-to-back, ETC.

For more details, see the relevant market practice document on www.smpg.info.