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Group

RelatedInstrumentGrp

ID1066
PedigreeAdded EP103, Updated EP201
The RelatedInstrumentGrp is a repeating component at the same hierarchical level as the Instrument component, describing relationships and linkages between the Instrument, UnderlyingInstrument and InstrumentLeg entries. If all instances of the UnderlyingInstrument in the message are true underliers of the Instrument then the RelatedInstrumentGrp component is not needed. If any instance of the UnderlyingInstrument has a different relationship, e.g. underlier of an InstrumentLeg, stream, equity equivalent or nearest exchange-traded contract or there are multiple instances of InstrumentLeg, then an entry for every relationship should be included in this component. When the RelatedInstrumentGrp appears within a repeating group, each entry only apply to the Instrument component at the same hierarchical level.
In messages, such as Email(35=C) and News(35=B), where Instrument and the InstrumentLeg are within their repeating groups, the RelatedInstrumentGrp component may be used to link legs and underliers to their appropriate base Instrument.
Field
Name
Type
Req'd
Comments
Pedigree
1647
Added EP103
1648
Conditionally required when NoRelatedInstruments > 0
Added EP103
1649
Either RelatedSymbol(1649) or RelatedSecurityID(1650) must be specified.
For RelatedInstrumentType(1648)=1 ("hedges for" instrument) this would be the instrument being used to offset the option Instrument.
If one of the "related to" fields is specified, this is the UnderlyingSymbol(311) of an underlying instrument defining the related security in the current message.
Added EP103
Updated EP187
1650
Either RelatedSymbol(1649) or RelatedSecurityID(1650) must be specified.
If one of the "related to" fields is specified, this is the UnderlyingSecurityID(309) of an underlying instrument defining the related security in the current message.
Added EP103
Updated EP187
1651
Conditionally required when RelatedSecurityID(1650) is specified.
Added EP103
Updated EP187
1652
May be omitted if RelatedSecurityID(1650) or RelatedSymbol(1649) refers to an underlying instrument in the current message.
Added EP103
Updated EP187
1653
May be omitted if RelatedSecurityID(1650) or RelatedSymbol(1649) refers to an underlying instrument in the current message.
Added EP103
Updated EP187
2413
Mutually exclusive with RelatedToStreamXIDRef(2415) and RelatedToDividendPeriodXIDRef(2417). If correlation is with the security in Instrument component then all "related to" fields may be omitted.
Added EP187
Updated EP208
2414
Conditionally required when RelatedToSecurityID(2413) is specified.
Added EP187
2415
Mutually exclusive with RelatedToSecurityID(2413) and RelatedToDividendPeriodXIDRef(2417). If correlation is with the security in Instrument component then all "related to" fields may be omitted.
Added EP187
Updated EP208
2417
Mutually exclusive with RelatedToSecurityID(2413) and RelatedToStreamXIDRef(2415). If correlation is with the security in Instrument component then all "related to" fields may be omitted.
Added EP208

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