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The MarketFactory FIX Drop Copy Server works as per the standard FIX Spec (4.4) with regards to the following messages:

MsgType (tag 35)	Message	Description
A	Logon	Initiates a FIX session. Heartbeat interval must be between 2 and 60, inclusive or the Logon attempt will be rejected.
0	Heartbeat	Monitors the status of the connection.
1	Test Request	Requests a Heartbeat from receiver.
2	Resend Request	Requests re-transmission of messages.
3	Reject	Session level message rejection.
4	Sequence Reset (Gap Fill)	Reset receiver’s sequence number.
5	Logout	Terminates a FIX session.

Logon

Tag	Field	Description	Req	Format	Notes
	Standard FIX Header		Y		35='A'
108	HeartBtInt	Used to determine the heartbeat interval.	Y	Int	>=2 AND <=60 (Seconds)
554	Password	Password provided by MF	Y	String

Heartbeat

Tag	Field	Description	Req	Format	Notes
	Standard FIX Header		Y		35='0'
112	TestReqID	Conditionally populated if the Heartbeat is sent in response to a TestRequest.	C	String	Free-form text string as populated in the TestRequest. e.g. UTC/Epoch Timestamp

Test Request

Tag	Field	Description	Req	Format	Notes
	Standard FIX Header		Y		35='1'
112	TestReqID	Free-form text string to be returned in resulting Heartbeat.	Y	String	E.g. UTC/Epoch Timestamp.

Resend Request

Tag

Field

Description

Req

Format

Notes

Standard FIX Header

Y

35='2'

7

BeginSeqNo

Message sequence number of first message in range to be resent.

Y

Int

-

16

EndSeqNo

Message sequence number of last message in range to be resent.

Y

Int

If request is for a single message BeginSeqNo (7) = EndSeqNo.

If request is for all messages subsequent to a particular message, EndSeqNo = "0" (representing infinity).

Reject

Tag	Field	Description	Req	Format	Notes
	Standard FIX Header		Y		35='3'
45	RefSeqNum	FIX sequence number of the rejected message.	Y	SeqNum	-
58	Text	Human-friendly string providing reason for rejection.	Y	String	-

Sequence Reset (Gap Fill)

Tag	Field	Description	Req	Format	Notes
	Standard FIX Header		Y		35='4'
23	GapFillFlag	-	Y	String	Always 'Y'.
36	NewSeqNo	The sequence number of the next message which will be transmitted by the sender	Y	SeqNum	-

Logout

Tag	Field	Description	Req	Format	Notes
	Standard FIX Header		Y		35='5'
58	Text	Human-friendly string providing reason for logout.	Y	String	-

Versions Compared

Old Version 12

New Version 13

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