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ISO 15022
Data Field Dictionary

MT515: (49) Field 35B: Identification of the Financial Instrument


Option B [ISIN1!e12!c]
(Identification of Security)
(Description of Security)


Optional in optional subsequence C2


This field identifies the underlying financial instrument.


At least Identification of a Security (Subfield 1) or Description of Security (Subfield 2) must be present; both may be present.

ISIN is used at the beginning of Identification of Security (Subfield 1) and must be composed of uppercase letters only.


The financial Instrument field 35B in the Financial Instrument Attributes subsequence must only be used for the identification of the underlying instrument(s) of a derivative. It must not be used, for example, for the listing of the underlying securities of an index.

When used in Description of Security (Subfield 2), codes must start and end with a slash '/'.

When an ISIN identifier is not used it is strongly recommended that one of the following codes be used as the first characters of the Description of Security (Subfield 2):


The ISO two-digit country code, followed by the national scheme number.


Followed by the ticker symbol.


Bilaterally agreed or proprietary scheme which may be further identified by a code or short description identifying the scheme used.


Code identifying the type of security identifier used. This code must be one published by ISO 20022 (ExternalFinancialInstrumentIdentificationTypeCode).

It is strongly recommended that the ISIN be used.


An ISIN will be identified as follows:

:35B:ISIN US0123456704

A SEDOL will be identified as follows:


A CUSIP will be identified as follows:


A proprietary scheme will be identified as follows:

:35B:/XX/SCHEMEUSED 0123456700

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