RootPartyIDSource (FIX tag 1118)

charFIX 5.0 SP2

RootPartyIDSource (tag 1118) is a char field defined in FIX 5.0 SP2. It appears in 8 message types, always optionally.

At a glance

Tag: 1118
Name: RootPartyIDSource
Datatype: char
Dialects: FIX 5.0 SP2
Messages: 8

What the specification says

PartyIDSource value within a root parties component. Same values as PartyIDSource (447)

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

A real message using tag 1118

QuoteRequest · FIX 5.0 SP2

Tag	Field	Wire value	Meaning
8	BeginString	FIXT.1.1
9	BodyLength	139
35	MsgType	R	QuoteRequest
49	SenderCompID	BOARTEAM
56	TargetCompID	COUNTERPARTY
34	MsgSeqNum	2
52	SendingTime	20240101-12:00:00.000
131	QuoteReqID	EXAMPLE
1116	NoRootPartyIDs2 entries	2	repeating group
1117	RootPartyID	EXAMPLE
1118	RootPartyIDSource	1
1117	RootPartyID	EXAMPLE
1118	RootPartyIDSource	1
146	NoRelatedSym1 entry	1	repeating group
55	Symbol	EUR/USD
10	CheckSum	191

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 5.0 SP2 dictionary and verified at build time: it parses and validates with no issues. Open the decoder to try your own message.

Where tag 1118 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	Requiredness	Where in the message
CrossOrderCancelReplaceRequest	t	Optional	inside the RootParties component
CrossOrderCancelRequest	u	Optional	inside the RootParties component
NewOrderCross	s	Optional	inside the RootParties component
NewOrderList	E	Optional	inside the RootParties component
QuoteRequest	R	Optional	inside the RootParties component
QuoteRequestReject	AG	Optional	inside the RootParties component
TradeCaptureReport	AE	Optional	inside the RootParties component
TradeCaptureReportAck	AR	Optional	inside the RootParties component

Wire format

A single character. Most char fields are enumerated, so the value is one of a fixed set rather than arbitrary text. @boarteam/fix keeps the value as a string and, for enumerated fields, reports validate/value-not-in-enum when it is not a defined value.

Read tag 1118 in TypeScript

decode.tsts

import { createFixEngine } from "@boarteam/fix";import { dictionary } from "@boarteam/fix-dict-fix50sp2";const fix = createFixEngine(dictionary);const { message, issues } = fix.parse(raw);const field = message.fields[1118];field?.name;   // "RootPartyIDSource"field?.raw;    // the verbatim wire stringfield?.value;  // coerced to a string

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-fix50sp2

Try the decoder Source on GitHub