Type Codes

Message Type

ITC Category Code

ITC Type Code

Comments

Normal message

Any

Blank

Most ITC messages have a blank Type Code

Delete

A

D

Quote delete

Delete

E

D

PNT delete

Delete

N

D

Quote delete

Delete

t

D

Spread delete

Insert

A

I

Quote insert

Insert

E

I

PNT insert

Insert

N

I

Quote insert

Control Message

C

A

Start of simulated data

Control Message

C

B

End of simulated data

Control Message

C

C

Start of communications testing

Control Message

C

D

Start of official transmissions

Control Message

C

I

End of official transmissions

Control Message

C

K

Set sequence number

Control Message

C

J

End of communications testing

Control Message

C

N

Character test

Control Message

C

O

Character test

Control Message

C

S

Simulated data warning

Control Message

C

T

Line integrity

Control Message

C

X

Close/open the log file

Actual Settle

Q

A

Unrounded settle price, usually sent along with the rounded settle

Final Settle

Q

F

Final settle price sent on the expiration date or the day after expiration

Lead Month

X

K

Current first month/year for a contract

FLEX

X

Z

Open Outcry messages for FLEX options

Contract Specification

Z

L

Specification messages for spreads

Contract Specification

Z

O

Specification messages for options

Contract Specification

Z

S

Specification messages for futures or options