SecurityIDSource (FIX tag 22)

StringFIX 4.4FIX 4.2

SecurityIDSource (tag 22) is a String field defined in FIX 4.4 and FIX 4.2. It appears in 59 message types, always optionally. It is an enumerated field with 19 defined values. FIX 4.2 calls this field IDSource; the tag number is unchanged, so the two are the same field on the wire.

Also known as IDSource

FIX 4.2 calls tag 22 IDSource. It is the same field on the wire — only the name changed — so a message encoded by either side interoperates.

At a glance

Tag: 22
Name: SecurityIDSource
Datatype: String
Dialects: FIX 4.4 and FIX 4.2
Messages: 59
Valid values: 19

What the specification says

FIX 4.4

Identifies class or source of the SecurityID (48) value. Required if SecurityID is specified.

FIX 4.2

Identifies class of alternative SecurityID

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

A real message using tag 22

NewOrderSingle · FIX 4.4

Tag	Field	Wire value	Meaning
8	BeginString	FIX.4.4
9	BodyLength	116
35	MsgType	D	Order – Single
49	SenderCompID	BOARTEAM
56	TargetCompID	COUNTERPARTY
34	MsgSeqNum	2
52	SendingTime	20240101-12:00:00.000
11	ClOrdID	ORD-10042
22	SecurityIDSource	1	CUSIP
54	Side	1	Buy
60	TransactTime	20240101-12:00:00.000
40	OrdType	1	Market
10	CheckSum	200

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.

Valid values

A value outside this list is not a parse error — the message still decodes — but validate() reports it as validate/value-not-in-enum.

Value	Meaning	Symbolic name	Dialects
1	CUSIP	CUSIP	FIX 4.4, FIX 4.2
2	SEDOL	SEDOL	FIX 4.4, FIX 4.2
3	QUIK	QUIK	FIX 4.4, FIX 4.2
4	ISIN number	ISIN_NUMBER / ISINNumber	FIX 4.4, FIX 4.2
5	RIC code	RIC_CODE / RICCode	FIX 4.4, FIX 4.2
6	ISO Currency Code	ISO_CURRENCY_CODE / ISOCurrencyCode	FIX 4.4, FIX 4.2
7	ISO Country Code	ISO_COUNTRY_CODE / ISOCountryCode	FIX 4.4, FIX 4.2
8	Exchange Symbol	EXCHANGE_SYMBOL / ExchangeSymbol	FIX 4.4, FIX 4.2
9	Consolidated Tape Association (CTA) Symbol (SIAC CTS/CQS line format)	CONSOLIDATED_TAPE_ASSOCIATION / ConsolidatedTapeAssociation	FIX 4.4, FIX 4.2
A	Bloomberg Symbol	BLOOMBERG_SYMBOL	FIX 4.4
B	Wertpapier	WERTPAPIER	FIX 4.4
C	Dutch	DUTCH	FIX 4.4
D	Valoren	VALOREN	FIX 4.4
E	Sicovam	SICOVAM	FIX 4.4
F	Belgian	BELGIAN	FIX 4.4
G	"Common" (Clearstream and Euroclear)	COMMON	FIX 4.4
H	Clearing House / Clearing Organization	CLEARING_HOUSE	FIX 4.4
I	ISDA/FpML Product Specification	ISDA_FPML_PRODUCT_SPECIFICATION	FIX 4.4
J	Options Price Reporting Authority	OPTIONS_PRICE_REPORTING_AUTHORITY	FIX 4.4

Where tag 22 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.

Message	MsgType	FIX 4.4	FIX 4.2	Where in the message
Advertisement	7	Conditional	Optional	inside the Instrument component
AllocationInstruction	J	Conditional	Optional	inside the Instrument component
AllocationReport	AS	Conditional	—	inside the Instrument component
AssignmentReport	AW	Conditional	—	inside the Instrument component
CollateralAssignment	AY	Conditional	—	inside the Instrument component
CollateralInquiry	BB	Conditional	—	inside the Instrument component
CollateralInquiryAck	BG	Conditional	—	inside the Instrument component
CollateralReport	BA	Conditional	—	inside the Instrument component
CollateralRequest	AX	Conditional	—	inside the Instrument component
CollateralResponse	AZ	Conditional	—	inside the Instrument component
Confirmation	AK	Conditional	—	inside the Instrument component
CrossOrderCancelReplaceRequest	t	Conditional	—	inside the Instrument component
CrossOrderCancelRequest	u	Conditional	—	inside the Instrument component
DerivativeSecurityList	AA	Conditional	—	inside RelSymDerivSecGrp › Instrument
DontKnowTrade	Q	Conditional	Optional	inside the Instrument component
Email	C	Conditional	Optional	inside InstrmtGrp › Instrument
ExecutionReport	8	Conditional	Optional	inside the Instrument component
IOI	6	Conditional	Optional	inside the Instrument component
ListStrikePrice	m	Conditional	Optional	inside InstrmtStrkPxGrp › Instrument
MarketDataIncrementalRefresh	X	Conditional	Optional	inside MDIncGrp › Instrument
MarketDataRequest	V	Conditional	Optional	inside InstrmtMDReqGrp › Instrument
MarketDataSnapshotFullRefresh	W	Conditional	Optional	inside the Instrument component
MassQuote	i	Conditional	Optional	inside QuotSetGrp › QuotEntryGrp › Instrument
MassQuoteAcknowledgement	b	Conditional	Optional	inside QuotSetAckGrp › QuotEntryAckGrp › Instrument
MultilegOrderCancelReplace	AC	Conditional	—	inside the Instrument component
NewOrderCross	s	Conditional	—	inside the Instrument component
NewOrderList	E	Conditional	Optional	inside ListOrdGrp › Instrument
NewOrderMultileg	AB	Conditional	—	inside the Instrument component
NewOrderSingle	D	Conditional	Optional	inside the Instrument component
News	B	Conditional	Optional	inside InstrmtGrp › Instrument
OrderCancelReplaceRequest	G	Conditional	Optional	inside the Instrument component
OrderCancelRequest	F	Conditional	Optional	inside the Instrument component
OrderMassCancelReport	r	Conditional	—	inside the Instrument component
OrderMassCancelRequest	q	Conditional	—	inside the Instrument component
OrderMassStatusRequest	AF	Conditional	—	inside the Instrument component
OrderStatusRequest	H	Conditional	Optional	inside the Instrument component
PositionMaintenanceReport	AM	Conditional	—	inside the Instrument component
PositionMaintenanceRequest	AL	Conditional	—	inside the Instrument component
PositionReport	AP	Conditional	—	inside the Instrument component
Quote	S	Conditional	Optional	inside the Instrument component
QuoteCancel	Z	Conditional	Optional	inside QuotCxlEntriesGrp › Instrument
QuoteRequest	R	Conditional	Optional	inside QuotReqGrp › Instrument
QuoteRequestReject	AG	Conditional	—	inside QuotReqRjctGrp › Instrument
QuoteResponse	AJ	Conditional	—	inside the Instrument component
QuoteStatusReport	AI	Conditional	—	inside the Instrument component
QuoteStatusRequest	a	Conditional	Optional	inside the Instrument component
RFQRequest	AH	Conditional	—	inside RFQReqGrp › Instrument
RequestForPositions	AN	Conditional	—	inside the Instrument component
RequestForPositionsAck	AO	Conditional	—	inside the Instrument component
SecurityDefinition	d	Conditional	Optional	inside the Instrument component
SecurityDefinitionRequest	c	Conditional	Optional	inside the Instrument component
SecurityList	y	Conditional	—	inside SecListGrp › Instrument
SecurityListRequest	x	Conditional	—	inside the Instrument component
SecurityStatus	f	Conditional	Optional	inside the Instrument component
SecurityStatusRequest	e	Conditional	Optional	inside the Instrument component
TradeCaptureReport	AE	Conditional	—	inside the Instrument component
TradeCaptureReportAck	AR	Conditional	—	inside the Instrument component
TradeCaptureReportRequest	AD	Conditional	—	inside the Instrument component
TradeCaptureReportRequestAck	AQ	Conditional	—	inside the Instrument component

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 22 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 securityIDSource = message.fields[22]?.raw;// e.g. "1" — CUSIP// The dictionary also carries the labels:const label = fix.dictionary  .fieldByTag(22)  ?.enumValues?.find((e) => e.value === securityIDSource)  ?.description;

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

Try the decoder Source on GitHub