Tag Field Name Data Type Description Used in
762 SecuritySubType

AbbrName: SubTyp
String Sub-type qualification/identification of the SecurityType (e.g. for SecurityType="REPO"), or the CFICode if SecurityType is not specified. If specified, SecuirtyType or CFICode is required.
Example Values:
General = General Collateral (for SecurityType=REPO)

For SecurityType="MLEG" markets can provide the name of the option or futures strategy, such as Calendar, Vertical, Butterfly, etc.
NOTE: Additional values may be used by mutual agreement of the counterparties
Instrument
SecTypesGrp
SecurityTypeRequest
DerivativeSecurityListRequest