UnderlyingSecurityAltIDSource (FIX tag 459)

StringFIX 4.4

UnderlyingSecurityAltIDSource (tag 459) is a String field defined in FIX 4.4. It appears in 59 message types, always optionally.

At a glance

Tag
459
Name
UnderlyingSecurityAltIDSource
Datatype
String
Dialects
FIX 4.4
Messages
59

What the specification says

Identifies class or source of the UnderlyingSecurityAltID (458) value. Required if UnderlyingSecurityAltID is specified. Valid values: Same valid values as the SecurityIDSource (22) field

Descriptions are quoted from the FIX Orchestra sources under the Apache 2.0 licence.

A real message using tag 459

NewOrderSingle · FIX 4.4
TagFieldWire valueMeaning
8BeginStringFIX.4.4
9BodyLength183
35MsgTypeDOrder – Single
49SenderCompIDBOARTEAM
56TargetCompIDCOUNTERPARTY
34MsgSeqNum2
52SendingTime20240101-12:00:00.000
11ClOrdIDORD-10042
711NoUnderlyings1 entry1repeating group
311UnderlyingSymbolEXAMPLE
457NoUnderlyingSecurityAltID2 entries2repeating group
458UnderlyingSecurityAltIDEXAMPLE
459UnderlyingSecurityAltIDSourceEXAMPLE
458UnderlyingSecurityAltIDEXAMPLE
459UnderlyingSecurityAltIDSourceEXAMPLE
54Side1Buy
60TransactTime20240101-12:00:00.000
40OrdType1Market
10CheckSum158
Edit and decode it yourself

Shown with | separators for readability. On the wire FIX uses SOH (0x01), an invisible control byte — and because BodyLength and CheckSum are computed over the actual bytes, the two forms have different checksums. Both are valid and both decode here.

Open in the full decoder →

Generated from the FIX 4.4 dictionary and verified at build time: it parses and validates with no issues. Open the decoder to try your own message.

Where tag 459 appears

Requiredness is a property of the message, not of the field: the same tag can be optional in one message and conditionally required in another.

MessageMsgTypeRequirednessWhere in the message
Advertisement7Conditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
AllocationInstructionJConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
AllocationReportASConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
AssignmentReportAWConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
CollateralAssignmentAYConditionalinside UndInstrmtCollGrp › UnderlyingInstrument › UndSecAltIDGrp
CollateralInquiryBBConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
CollateralInquiryAckBGConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
CollateralReportBAConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
CollateralRequestAXConditionalinside UndInstrmtCollGrp › UnderlyingInstrument › UndSecAltIDGrp
CollateralResponseAZConditionalinside UndInstrmtCollGrp › UnderlyingInstrument › UndSecAltIDGrp
ConfirmationAKConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
CrossOrderCancelReplaceRequesttConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
CrossOrderCancelRequestuConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
DerivativeSecurityListAAConditionalinside UnderlyingInstrument › UndSecAltIDGrp
DerivativeSecurityListRequestzConditionalinside UnderlyingInstrument › UndSecAltIDGrp
DontKnowTradeQConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
EmailCConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
ExecutionReport8Conditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
IOI6Conditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
ListStrikePricemConditionalinside UndInstrmtStrkPxGrp › UnderlyingInstrument › UndSecAltIDGrp
MarketDataIncrementalRefreshXConditionalinside MDIncGrp › UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
MarketDataRequestVConditionalinside InstrmtMDReqGrp › UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
MarketDataSnapshotFullRefreshWConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
MassQuoteiConditionalinside QuotSetGrp › UnderlyingInstrument › UndSecAltIDGrp
MassQuoteAcknowledgementbConditionalinside QuotSetAckGrp › UnderlyingInstrument › UndSecAltIDGrp
MultilegOrderCancelReplaceACConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
NewOrderCrosssConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
NewOrderListEConditionalinside ListOrdGrp › UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
NewOrderMultilegABConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
NewOrderSingleDConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
NewsBConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
OrderCancelReplaceRequestGConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
OrderCancelRequestFConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
OrderMassCancelReportrConditionalinside UnderlyingInstrument › UndSecAltIDGrp
OrderMassCancelRequestqConditionalinside UnderlyingInstrument › UndSecAltIDGrp
OrderMassStatusRequestAFConditionalinside UnderlyingInstrument › UndSecAltIDGrp
OrderStatusRequestHConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
PositionMaintenanceReportAMConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
PositionMaintenanceRequestALConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
PositionReportAPConditionalinside PosUndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
QuoteSConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
QuoteCancelZConditionalinside QuotCxlEntriesGrp › UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
QuoteRequestRConditionalinside QuotReqGrp › UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
QuoteRequestRejectAGConditionalinside QuotReqRjctGrp › UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
QuoteResponseAJConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
QuoteStatusReportAIConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
QuoteStatusRequestaConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
RFQRequestAHConditionalinside RFQReqGrp › UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
RequestForPositionsANConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
RequestForPositionsAckAOConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
SecurityDefinitiondConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
SecurityDefinitionRequestcConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
SecurityListyConditionalinside SecListGrp › UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
SecurityListRequestxConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
SecurityStatusfConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
SecurityStatusRequesteConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
TradeCaptureReportAEConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
TradeCaptureReportRequestADConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp
TradeCaptureReportRequestAckAQConditionalinside UndInstrmtGrp › UnderlyingInstrument › UndSecAltIDGrp

Wire format

Free-form text. Any byte except the SOH separator is legal, so values are not trimmed or case-folded on the wire. @boarteam/fix keeps the value as a string; format rules are checked by validate(), which reports validate/invalid-value rather than throwing.

Read tag 459 in TypeScript

decode.tsts
import { createFixEngine } from "@boarteam/fix";import { dictionary } from "@boarteam/fix-dict-fix44";const fix = createFixEngine(dictionary);const { message, issues } = fix.parse(raw);const field = message.fields[459];field?.name;   // "UnderlyingSecurityAltIDSource"field?.raw;    // the verbatim wire stringfield?.value;  // coerced to a string

Other String fields

Decode this in your own code

The same engine that produced the decoded example above is an Apache-2.0 npm package with zero runtime dependencies. It runs in Node and in the browser, and parse() returns problems as data instead of throwing.

npm i @boarteam/fix @boarteam/fix-dict-fix44