ClearingInstruction (FIX tag 577)

intFIX 4.4

ClearingInstruction (tag 577) is an int field defined in FIX 4.4. It appears in 3 message types, always optionally. It is an enumerated field with 14 defined values.

At a glance

Tag: 577
Name: ClearingInstruction
Datatype: int
Dialects: FIX 4.4
Messages: 3
Valid values: 14

What the specification says

Eligibility of this trade for clearing and central counterparty processing

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

A real message using tag 577

AllocationInstruction · FIX 4.4

Tag	Field	Wire value	Meaning
8	BeginString	FIX.4.4
9	BodyLength	163
35	MsgType	J	Allocation Instruction
49	SenderCompID	BOARTEAM
56	TargetCompID	COUNTERPARTY
34	MsgSeqNum	2
52	SendingTime	20240101-12:00:00.000
70	AllocID	EXAMPLE
71	AllocTransType	0	New
626	AllocType	1	Calculated (includes MiscFees and NetMoney)
857	AllocNoOrdersType	0	Not specified
54	Side	1	Buy
53	Quantity	1000000
6	AvgPx	1.09215
75	TradeDate	20240101
78	NoAllocs1 entry	1	repeating group
79	AllocAccount	EXAMPLE
576	NoClearingInstructions2 entries	2	repeating group
577	ClearingInstruction	0	process normally
577	ClearingInstruction	0	process normally
10	CheckSum	066

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
0	process normally	PROCESS_NORMALLY
1	exclude from all netting	EXCLUDE_FROM_ALL_NETTING
2	bilateral netting only	BILATERAL_NETTING_ONLY
3	ex clearing	EX_CLEARING
4	special trade	SPECIAL_TRADE
5	multilateral netting	MULTILATERAL_NETTING
6	clear against central counterparty	CLEAR_AGAINST_CENTRAL_COUNTERPARTY
7	exclude from central counterparty	EXCLUDE_FROM_CENTRAL_COUNTERPARTY
8	Manual mode (pre-posting and/or pre-giveup)	MANUAL_MODE
9	Automatic posting mode (trade posting to the position account number specified)	AUTOMATIC_POSTING_MODE
10	Automatic give-up mode (trade give-up to the give-up destination number specified)	AUTOMATIC_GIVE_UP_MODE
11	Qualified Service Representative (QSR) -	QUALIFIED_SERVICE_REPRESENTATIVE
12	Customer Trade	CUSTOMER_TRADE
13	Self clearing	SELF_CLEARING

Where tag 577 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
AllocationInstruction	J	Optional	inside AllocGrp › ClrInstGrp
AllocationReport	AS	Optional	inside AllocGrp › ClrInstGrp
TradeCaptureReport	AE	Optional	inside TrdCapRptSideGrp › ClrInstGrp

Wire format

A whole number, optionally signed. Leading zeros are legal on the wire and are preserved in the raw value. @boarteam/fix parses the value as a number and reports parse/invalid-int when it does not lex as one; the raw string is kept either way.

Read tag 577 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 clearingInstruction = message.fields[577]?.raw;// e.g. "0" — process normally// The dictionary also carries the labels:const label = fix.dictionary  .fieldByTag(577)  ?.enumValues?.find((e) => e.value === clearingInstruction)  ?.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