IOIQualifier (FIX tag 104)

charFIX 4.4FIX 4.2

IOIQualifier (tag 104) is a char field defined in FIX 4.4 and FIX 4.2. It appears in 1 message type, always optionally. It is an enumerated field with 18 defined values.

At a glance

Tag: 104
Name: IOIQualifier
Datatype: char
Dialects: FIX 4.4 and FIX 4.2
Messages: 1
Valid values: 18

What the specification says

FIX 4.4

Code to qualify IOI use

FIX 4.2

Code to qualify IOI use.

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

A real message using tag 104

IOI · FIX 4.4

Tag	Field	Wire value	Meaning
8	BeginString	FIX.4.4
9	BodyLength	107
35	MsgType	6	Indication of Interest
49	SenderCompID	BOARTEAM
56	TargetCompID	COUNTERPARTY
34	MsgSeqNum	2
52	SendingTime	20240101-12:00:00.000
23	IOIID	EXAMPLE
28	IOITransType	N	New
54	Side	1	Buy
27	IOIQty	S	Small
199	NoIOIQualifiers2 entries	2	repeating group
104	IOIQualifier	A	All or none
104	IOIQualifier	A	All or none
10	CheckSum	149

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
A	All or none	ALL_OR_NONE / AllOrNone	FIX 4.4, FIX 4.2
B	Market On Close (MOC) (held to close)	MARKET_ON_CLOSE	FIX 4.4
C	At the close (around/not held to close)	AT_THE_CLOSE / AtTheClose	FIX 4.4, FIX 4.2
D	VWAP (Volume Weighted Avg Price)	VWAP	FIX 4.4
I	In touch with	IN_TOUCH_WITH / InTouchWith	FIX 4.4, FIX 4.2
L	Limit	LIMIT / Limit	FIX 4.4, FIX 4.2
M	More behind	MORE_BEHIND / MoreBehind	FIX 4.4, FIX 4.2
O	At the open	AT_THE_OPEN / AtTheOpen	FIX 4.4, FIX 4.2
P	Taking a position	TAKING_A_POSITION / TakingAPosition	FIX 4.4, FIX 4.2
Q	At the Market (previously called Current Quote)	AT_THE_MARKET / AtTheMarket	FIX 4.4, FIX 4.2
R	Ready to trade	READY_TO_TRADE / ReadyToTrade	FIX 4.4, FIX 4.2
S	Portfolio shown	PORTFOLIO_SHOWN / PortfolioShown	FIX 4.4, FIX 4.2
T	Through the day	THROUGH_THE_DAY / ThroughTheDay	FIX 4.4, FIX 4.2
V	Versus	VERSUS / Versus	FIX 4.4, FIX 4.2
W	Indication - Working away	INDICATION / Indication	FIX 4.4, FIX 4.2
X	Crossing opportunity	CROSSING_OPPORTUNITY / CrossingOpportunity	FIX 4.4, FIX 4.2
Y	At the Midpoint	AT_THE_MIDPOINT / AtTheMidpoint	FIX 4.4, FIX 4.2
Z	Pre-open	PRE_OPEN / PreOpen	FIX 4.4, FIX 4.2

Where tag 104 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
IOI	6	Conditional	Optional	inside the IOIQualGrp 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 104 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 iOIQualifier = message.fields[104]?.raw;// e.g. "A" — All or none// The dictionary also carries the labels:const label = fix.dictionary  .fieldByTag(104)  ?.enumValues?.find((e) => e.value === iOIQualifier)  ?.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