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VOLUME 22 – BULLETIN #007
TO:
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ALL CLEARING MEMBERS
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FROM:
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BUSINESS SYSTEMS GROUP
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DATE:
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January 10, 2002
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SUBJECT:
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GAPI/Real Time Feed Message Differences
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With the upcoming plan to move give-up processing from the OTIS System to the ACT 2.0TM System, firms will need to be prepared to handle the replacement of MQM Real Time messages with Give-Up Application Program Interface (GAPI) messages. Listed below are the GAPI equivalents to current Real Time MQM messages as well as new messages exclusive to GAPI. The listing is being provided to help firms assess the impact of changes they will need to make to process GAPI messages.
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GAPI Messages that have Real Time Feed Equivalents:
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• Initiate Reversal (GIC/GID) |
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• Alerts to the executing firm: |
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• Allocation Reject (GJA) |
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GAPI Messages that have NO Real Time Feed Equivalents:
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• All summary messages (GSA, GSC, GSD) |
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• Allocation Reject (GJC/GJD) |
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• Confirm Reversal (GVC/GVD) |
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• Alerts to the carrying firm: |
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• Initiate Reversal (GIA) |
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Trex Record Differences:
Field
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GAPI
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RTF
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Trex Blocks
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Always Main, M2.
A2 for all except summary messages.
Optional M1 for errors and certain messages.
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Always Main, A2, M2
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Message Identifier
(Main Block cols 1 – 3)
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Various, beginning with G
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‘1’ – Futures Clearing & Books
‘J’ – Futures Clearing Only
‘H’ – Options
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Message Length
(Main Block cols 21 – 24)
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Various
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Always 245
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Trade Id Source Code
(Main Block cols 146 – 148)
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‘GAP’
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‘DUG’
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M2 Subsystem
(M2 Block cols 6 – 8)
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‘GAP’
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‘DUG’
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Record Id on Allocation Add Messages –
GAC/GAD Action A
(Main Block cols 140 – 145)
(M1 Block cols 110 – 115)
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Main block record id contains summary id. M1 block contains allocation id.
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Main block record id contains allocation id. M1 block not used.
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Record Id on Claim Add Messages –
GCC/GCD Action A
(Main Block cols 140 – 145)
(M1 Block cols 110 – 115)
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Main block record id contains allocation id. M1 block contains claim id
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Main block record id contains claim id. M1 block not used.
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Should you have any questions, please call or e-mail one of the following Business Systems Analysts:
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