{"type":"doc","content":[{"type":"paragraph","content":[{"text":"The Drop Copy 4.0 service allows customers to receive real-time copies of CME Globex Execution Report and Acknowledgment messages as they are sent over iLink order entry system sessions. Drop Copy aggregates iLink messages, enabling customers to aggregate positions and monitor orders for sessions guaranteed by one or more clearing firms upon approval of the clearing firms. ","type":"text"}]},{"type":"paragraph","content":[{"text":"With the Drop Copy 4.0 session model, customers must: ","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":" manage sequence streams from Convenience Gateway iLink source sessions across all market segments.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":" manage sequence streams from Market Segment Gateway iLink source sessions per unique market segment; with the possibility of having the same sequence numbers from multiple market segments.","type":"text"}]}]}]},{"type":"paragraph","content":[{"text":"The Drop Copy service supports CME Globex order routing messages, including both iLink API and CME Direct.","type":"text"}]},{"type":"paragraph","content":[{"text":"Configuration of the Drop Copy service should be requested through your Global Account Manager (GAM). Once the completed ","type":"text"},{"text":"Schedule 12-","type":"text","marks":[{"type":"link","attrs":{"href":"http://www.cmegroup.com/globex/files/CMEGlobexSch12-DropCopy.pdf"}}]},{"text":"Drop Copy 4.0 Service","type":"text","marks":[{"type":"em"},{"type":"link","attrs":{"href":"http://www.cmegroup.com/globex/files/CMEGlobexSch12-DropCopy.pdf"}}]},{"text":" form","type":"text","marks":[{"type":"link","attrs":{"href":"http://www.cmegroup.com/globex/files/CMEGlobexSch12-DropCopy.pdf"}}]},{"text":" is submitted, all configuration requests for Drop Copy must be submitted by an authorized contact for the Drop Copy group. The configuration request should include which iLink Source sessions should be configured to feed the Drop Copy group as well as the message types the customer wishes to receive for the Drop Copy 4.0 group.","type":"text"}]},{"type":"paragraph","content":[{"text":"The configurations for Drop Copy are sent by the customer’s Global Account Manager (GAM). Any changes to the Drop Copy configurations (adding/removing source session ID(s) or Drop Copy Automation Rules) must be made by the customer’s authorized Clearing Firm contact. Drop Copy credentials are sent to the customer directly.","type":"text"}]},{"type":"paragraph","content":[{"text":"The available message types can be categorized as follows:","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Execution Reports","type":"text","marks":[{"type":"strong"}]},{"text":" – these messages include all fills and any trade cancel messages generated by the Source session(s). These messages can be used to determine the trading customer’s filled position.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Acknowledgments ","type":"text","marks":[{"type":"strong"}]},{"text":"– these messages include all confirmation and elimination messages generated by the Source session(s). These messages can be used to determine the trading customer’s open order position.","type":"text"}]}]}]},{"type":"paragraph","content":[{"text":"Authorized persons can specify which message types the Drop Copy consumer will receive on the Target Drop Copy session(s). Available messages are:","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Execution Reports (tag 35-MsgType=8) including: ","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Modification Confirmation (tag 39-OrdStatus= 5 [replaced])","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665092219"}}]}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Fill Notice (tag 39-OrdStatus=1 [partial fill], 2 [filled])","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665026738"}}]}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Cancellation/Elimination Confirmation Message (tag 39-OrdStatus=4 [cancelled], C [expired])","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665092241"}}]}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Acknowledgment of Order Creation (tag 39-OrdStatus=0 [new])","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665092219"}}]}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Trade Cancellation Notice (tag 39-OrdStatus=H [cancelled])","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665124962"}}]}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Trade Correction (tag 39-OrdStatus=G [Trade Correct])","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665485390"}}]}]}]}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Order Mass Action Report (tag 35-MsgType=BZ)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665485411"}}]}]}]}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Customers must wait for in-flight resend requests to be fulfilled before logging out or failing over to the backup gateway.","type":"text"}]}]},{"type":"paragraph","content":[{"text":"The Drop Copy 4.0 implementation includes:","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"session model to support both Convenience Gateway and Market Segment Gateway source sessions","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"iLink-style session-level functionality","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"message format","type":"text"},{"text":" with","type":"text","marks":[{"type":"annotation","attrs":{"annotationType":"inlineComment","id":"c9cbbada-f383-4b6a-b5a2-4e940f1ec017"}}]},{"text":" ","type":"text"},{"text":"encapsulated message type","type":"text","marks":[{"type":"link","attrs":{"href":"#DropCopy4.0FunctionalSpecification-ApplicationMessages"}}]}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"dedicated FIX tags on Drop Copy 4.0 messages – inbound and outbound","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"standardized resend behavior (elimination of Application Resend functionality to align with iLink)","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"sequencing by market segment","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"robust fault tolerance","type":"text"}]}]}]},{"type":"paragraph","content":[{"text":"Contents","type":"text","marks":[{"type":"strong"}]}]},{"type":"extension","attrs":{"extensionType":"com.atlassian.confluence.macro.core","extensionKey":"toc","parameters":{"macroParams":{},"macroMetadata":{"macroId":{"value":"1c6d7370-cb6c-4be4-b228-3e15dc0cbc12"},"schemaVersion":{"value":"1"},"title":"Table of Contents"}}}},{"type":"heading","attrs":{"level":1},"content":[{"text":"Connectivity Management","type":"text"}]},{"type":"orderedList","attrs":{"order":1},"content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"CME Group requires that the client systems set their ","type":"text"},{"text":"heartbeat","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665452594"}}]},{"text":" interval to between 5 and 60 seconds, or the ","type":"text"},{"text":"Logon (35=A)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/664862773"}}]},{"text":" message will not be acted upon. CME Group recommends a heartbeat interval of 30 seconds.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Once the client system is logged on, if an inbound message is not sent during the defined interval, Drop Copy will send a ","type":"text"},{"text":"Test Request (tag 35-Msgtype=1)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665157659"}}]},{"text":" message to ensure connectivity.","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"If no message is received in response to the Test Request (tag 35-MsgType=1) message within the defined heartbeat interval, the connection is assumed to be stale and the socket is closed.","type":"text"}]}]}]}]}]},{"type":"heading","attrs":{"level":2},"content":[{"text":"Session Logon","type":"text"}]},{"type":"orderedList","attrs":{"order":1},"content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"All non-logon inbound messages sent after TCP connection and before session logon will result in a ","type":"text"},{"text":"Logout (tag 35-MsgType=5)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665092200"}}]},{"text":" message.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Client systems MUST initiate a ","type":"text"},{"text":"Logon (tag 35-MsgType=A)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/664862773"}}]},{"text":" message within 60 seconds of establishing a TCP socket connection, or the session will be ungracefully disconnected.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Client systems can establish a session for the Drop Copy service by the following means:","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Beginning of Week Logon","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665092109"}},{"type":"strong"}]},{"text":" – This is the very first Logon (tag 35-MsgType=A) message the customer sends to Drop Copy for the week. Client systems MUST set their outbound sequence numbers (tag 34-MsgSeqNum) to '1' and tag 141-ResetSeqNumFlag=N or not present, or the client system will be logged out.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Mid-Week Logon","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/pages/createpage.action?spaceKey=DRAFT&title=Drop%20Copy%20Session%20Layer%20-%20Logon-ARCHIVED"}},{"type":"strong"}]},{"text":" – Used for any subsequent logons after the beginning of the week. Client systems MUST set their outbound sequence numbers (tag 34-MsgSeqNum) to the next expected sequence number or tag 789-NextExpectedMsgSeqNum value on the ","type":"text"},{"text":"Logout (tag 35-MsgSeqNum=5)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665092200"}}]},{"text":" message received from CME Globex after the client system’s last logout, or the client system will be logged out.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"In-session logon","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665092109"}},{"type":"strong"}]},{"text":" - Only supported for sequence number reset for a session that is already logged on. The in-session Logon message MUST have tag 141-ResetSeqNumFlag=Y and tag 34–MsgSeqNum=1, or the client system will be logged out.","type":"text"}]}]}]}]}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Tag 122-OrigSendingTime must not be present on any logon message or the client system will be logged out.","type":"text"}]}]},{"type":"heading","attrs":{"level":2},"content":[{"text":"Sequence Number Management","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Messages from the client system with higher than expected sequence numbers will trigger a ","type":"text"},{"text":"Resend Request (tag 35-MsgType=2)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665485365"}}]},{"text":" message from Drop Copy.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Messages from the client system with lower than expected sequence numbers will result in a ","type":"text"},{"text":"Logout (tag 35-MsgType=5)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665092200"}}]},{"text":" message.","type":"text"}]}]}]},{"type":"heading","attrs":{"level":2},"content":[{"text":"Sequence Number Reset","type":"text"}]},{"type":"orderedList","attrs":{"order":1},"content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"To ","type":"text"},{"text":"reset sequence numbers","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/664764477"}}]},{"text":" that are higher than the expected value, client systems can submit a ","type":"text"},{"text":"Sequence Reset (tag 35-MsgType=4)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665813041"}}]},{"text":" message with Gap Fill (tag 123-GapFill=N) where tag 34-MsgSeqNum is the next expected or higher sequence number","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"To reset sequence numbers on Drop Copy and CME Globex with in-session logon, the inbound message from the client system MUST have tag 141-ResetSeqNumFlag=Y and tag 34–MsgSeqNum=1.","type":"text"}]}]}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"After an in-session logon, all prior messages from CME Globex will be unrecoverable.","type":"text"}]}]},{"type":"heading","attrs":{"level":2},"content":[{"text":"Encapsulated Payload","type":"text"}]},{"type":"paragraph","content":[{"text":"Customers will receive messages from their Source session activity as a payload encapsulated within ","type":"text"},{"text":"an","type":"text","marks":[{"type":"annotation","attrs":{"annotationType":"inlineComment","id":"eb81720a-f964-4572-b06e-4d3fc024bfe5"}}]},{"text":" ","type":"text","marks":[{"type":"annotation","attrs":{"annotationType":"inlineComment","id":"20e63ce3-099f-4077-825a-0a4bd1ab7ad8"}},{"type":"annotation","attrs":{"annotationType":"inlineComment","id":"eb81720a-f964-4572-b06e-4d3fc024bfe5"}}]},{"text":"XML non-FIX message (35=n)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/664928333"}},{"type":"textColor","attrs":{"color":"#FF0000"}},{"type":"strong"}]},{"text":".","type":"text","marks":[{"type":"annotation","attrs":{"annotationType":"inlineComment","id":"20e63ce3-099f-4077-825a-0a4bd1ab7ad8"}}]}]},{"type":"heading","attrs":{"level":3},"content":[{"text":"Message Recovery: Drop Copy to Client","type":"text"}]},{"type":"orderedList","attrs":{"order":1},"content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Both ","type":"text"},{"text":"Basic and Enhanced Resend Requests","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665288724"}}]},{"text":" are available for Drop Copy. CME group strongly recommends the use of Enhanced Resend Request.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"When CME Globex sends the client system a ","type":"text"},{"text":"Resend Request (tag 35-MsgType=2) message","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665485365"}}]},{"text":", the client system can take one of the following steps:","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"The client system can send a ","type":"text"},{"text":"Sequence Reset - Gap Fill (tag 35-MsgType=4, tag 43-PossDupFlag=Y, tag 123-GapFill=Y, tag 36-NewSeqNo present and tag 122-OrigSendingTime present)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665813041"}}]},{"text":" message to recover from out of sequence conditions. [The tag 36-NewSeqNo value cannot be lower than the expected incoming sequence number of the system that originated the Resend Request (client system or CME Globex).]","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"If the client system chooses to resend all requested messages, tag 122-OrigSendingTime and tag 43-PossDupFlag=Y are required.","type":"text"}]}]}]}]}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"CME Group recommends that client systems respond to the Drop Copy Resend Request (tag 35-MsgType=2) message with a Sequence Reset - Gap Fill message.","type":"text"}]}]},{"type":"heading","attrs":{"level":3},"content":[{"text":"Message Recovery: Client to Drop Copy","type":"text"}]},{"type":"orderedList","attrs":{"order":1},"content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"The Application Resend Request (tag 35-MsgType=BW) message is no longer supported by Drop Copy. Client systems sending an Application Resend Request (35=BW) message will receive a ","type":"text"},{"text":"Session Level Reject (tag 35-MsgType=3)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/pages/createpage.action?spaceKey=DRAFT&title=Drop%20Copy%20Session%20Level%20Reject-ARCHIVED"}}]},{"text":" message from Drop Copy.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Drop Copy will process only one ","type":"text"},{"text":"Resend Request (tag 35-MsgType=2)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/pages/createpage.action?spaceKey=DRAFT&title=Drop%20Copy%20Session%20Layer%20-%20Resend%20Request-ARCHIVED"}}]},{"text":" message from a client system at a time. Any successive Resend Request (35=2) messages received during processing will be rejected.","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"An in-session Logon (35=A) message sent while Drop Copy is processing a previous resend request will result in a logout.","type":"text"}]}]}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Real time messages will be published at the same time as the Resend Response messages initiated by the Resend Request.","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Client system MUST not trigger another resend.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Client system MUST manage sequence numbers separately for messages with tag 43=Y (Resend Response messages).","type":"text"}]}]}]}]}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Client systems must hold all non-Resend Request Response messages until the resend is complete.","type":"text"}]}]},{"type":"heading","attrs":{"level":3},"content":[{"text":"Message Resend Request Validation","type":"text"}]},{"type":"orderedList","attrs":{"order":1},"content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"FIX Resend Requests are available for messages from the current business week only. Resend Requests from the client system will only be fulfilled for messages with a sending time within the past 48-hour window.","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"If the range of requested messages are all within 48 hours of their send time, the messages will all be made available.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"If part of the requested range of message sequence number send times fall outside the 48 hour window, Drop Copy will Gap Fill the unrecoverable messages and resend the available messages.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"If the send times for all requested messages fall outside the 48 hour window, Drop Copy will send a ","type":"text"},{"text":"Session Level Reject (tag 35-MsgType=3)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665452647"}}]},{"text":" message with tag 58=”Resend Request Could Not Be Fulfilled”. In the reject message, tag 5024-StartSequenceNumber will reflect the sequence number of the message with the earliest send time in the past 48 hours.","type":"text"}]},{"type":"extension","attrs":{"extensionType":"com.atlassian.confluence.migration","extensionKey":"__confluenceADFMigrationUnsupportedContentInternalExtension__","text":"","parameters":{"cxhtml":"

The value of tag 5024-StartSequenceNumber is only accurate for the instance for which the reject message was generated; the value of tag 5024-StartSequenceNumber will continue to increment over time.

","nestedContent":{"type":"doc","content":[{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"The value of tag 5024-StartSequenceNumber is only accurate for the instance for which the reject message was generated; the value of tag 5024-StartSequenceNumber will continue to increment over time.","type":"text"}]}]}],"version":1},"reason":"An info macro in a list item can't be created or edited in the new editor."}}},{"type":"paragraph","content":[{"type":"hardBreak"}]}]}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"The Drop Copy service offers a maximum limit of 2500 messages per Resend Request, any request exceeding the limit will result in a Session Level Reject (tag 35-MsgType=3) message from Drop Copy.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Inbound tag 7-BeginSeqNo MUST be lower than the last sequence number (tag 34-MsgSeqNum) or the request will result in a forced logout.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Tag 7-BeginSeqNo MUST be greater than 0 on the Resend Request or the client system will receive a Session Level Reject (tag 35-MsgType=3) message from Drop Copy.","type":"text"}]}]}]},{"type":"heading","attrs":{"level":3},"content":[{"text":"Messaging Integrity and Validation","type":"text"}]},{"type":"orderedList","attrs":{"order":1},"content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Any invalid message type sent by the client system will result in a ","type":"text"},{"text":"Session Level Reject (35=3)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665452647"}}]},{"text":" message from the Drop Copy gateway.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"The client system must send all inbound messages with a valid tag 10-","type":"text"},{"text":"checksum","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665092171"}}]},{"text":" value. Messages with checksum values that are non-numeric or contain more than 3 digits will not be acted upon by Drop Copy.","type":"text"}]}]}]},{"type":"heading","attrs":{"level":3},"content":[{"text":"Fault Tolerance and Fail-Over Management","type":"text"}]},{"type":"orderedList","attrs":{"order":1},"content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Client systems must always connect and ","type":"text"},{"text":"log into","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665092109"}}]},{"text":" the designated primary gateway as long as it is available. An attempt to log into the designated backup while the designated primary is available will result in a forced logout.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"In the event of a failover, the client system should resume sequencing on the newly-promoted, designated primary with the next sequence number (tag 34-MsgSeqNum) expected from the client system.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Drop Copy 4.0 will send messages with tag 97-PossResend =Y in the following scenarios:","type":"text"}]}]}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"while recovering unsent messages after a dual failure or before Sunday startup","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"while resending outbound messages that may have been in-flight during a single Drop Copy failover","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"while receiving outbound messages that may have been in-flight during iLink failover","type":"text"}]}]}]},{"type":"heading","attrs":{"level":1},"content":[{"text":"Drop Copy Architecture","type":"text"}]},{"type":"paragraph","content":[{"text":"For customers choosing to consume message streams from MSGW, a new Drop Copy 4.0 target session is required.","type":"text","marks":[{"type":"textColor","attrs":{"color":"#000000"}}]}]},{"type":"paragraph","content":[{"text":"A Drop Copy 4.0 target session will be replicated across multiple Drop Copy Market Segment gateways, each receiving sequence streams comprised of messages from individual market segments. ","type":"text"},{"text":"Duplicate sequence numbers may be received by the ","type":"text"},{"text":"target session ","type":"text"},{"text":"across market segments","type":"text"},{"text":".","type":"text"}]},{"type":"paragraph","content":[{"text":"The diagram below shows the new Drop Copy 4.0 architecture managing Market Segment Gateway sequence 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Customers can choose to receive messages over Drop Copy configured to the following three levels:","type":"text"}]},{"type":"paragraph","content":[{"text":"Trade Execution Reports","type":"text","marks":[{"type":"strong"}]},{"text":" including:","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Execution Report - Fill Notice","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665026738"}}]},{"text":" (complete and partial fills)","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Execution Report - Trade Cancel","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665124962"}}]}]}]}]},{"type":"paragraph","content":[{"text":"Order Entry Acknowledgments","type":"text","marks":[{"type":"strong"}]},{"text":" including:","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Execution Report - Order Creation, Cancel, or Modify","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665092219"}}]}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Execution Report - Order Elimination","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665092241"}}]}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Execution Report - Order Mass Action","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665485411"}}]},{"text":" - in ","type":"text"},{"text":"response to","type":"text","marks":[{"type":"annotation","attrs":{"annotationType":"inlineComment","id":"41a05dfe-dbc9-4018-b6ac-6602b03dbd55"}}]},{"text":" ","type":"text"},{"text":"Mass Order Cancel","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/457227990"}}]}]}]}]},{"type":"paragraph","content":[{"text":"All of the Above","type":"text","marks":[{"type":"strong"}]}]},{"type":"paragraph","content":[{"text":"For additional details regarding the order flow messages that will be contained in the message payload, please refer ","type":"text"},{"text":"to the","type":"text","marks":[{"type":"annotation","attrs":{"annotationType":"inlineComment","id":"e855862c-f738-4b4b-937d-3d67dd1bc4ef"}}]},{"text":" ","type":"text"},{"text":"iLink Message specification","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665714714"}}]},{"text":".","type":"text"}]},{"type":"heading","attrs":{"level":1},"content":[{"text":"Functional Specification","type":"text"}]},{"type":"paragraph","content":[{"text":"See the ","type":"text"},{"text":"Functional Specification","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665026642"}}]},{"text":" for more information on Drop Copy 4.0 functionality.","type":"text"}]},{"type":"heading","attrs":{"level":1},"content":[{"text":"Bandwidth Impact","type":"text"}]},{"type":"paragraph","content":[{"text":"Since Drop Copy 4.0 target sessions transmit Acknowledgment and Execution messages only (no market data), bandwidth impact for this release should be minimal, but is dependent upon the number of Source sessions bundled to the Drop Copy 4.0 group. Drop Copy 4.0 uses the same packet size as an outbound iLink message from the source session Execution Report and reject messages.","type":"text"}]},{"type":"heading","attrs":{"level":1},"content":[{"text":"Fault Tolerance","type":"text"}]},{"type":"paragraph","content":[{"text":"Fault Tolerance on Drop Copy 4.0 is managed at the application level. Drop Copy 4.0 has a pair of gateways, one that is designated as the primary gateway and another host designated as the backup.","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Customers must successfully log on to the designated primary Drop Copy 4.0 session before attempting to log on to the backup.","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"If a session logs on to the backup gateway before logging on to the primary gateway, CME Globex will send a ","type":"text"},{"text":"Logout message (tag 35-MsgType=5)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665092200"}}]},{"text":", with tag 58-Text=","type":"text"},{"text":"Backup session not allowed. Logout forced.","type":"text","marks":[{"type":"strong"}]}]}]}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Customers can only receive acknowledgments through their primary connections.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"If the primary Drop Copy 4.0 session fails, failover occurs by promoting the backup Drop Copy 4.0 session to the primary role.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"If the primary connection fails and the client system connects to the backup, the backup begins with the next available sequence number. Tag 43-PossDup is not included in the message.","type":"text"}]}]}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"In the event of a Drop Copy 4.0 failover, upon logon to the new primary connection, client systems will experience a significant increase (currently set to 4000) in sequence numbers (tag 34-MsgSeqNum) sent from CME Globex to the Client System. CME Group recommends that client systems request all missing messages. ","type":"text"},{"text":"For all ","type":"text","marks":[{"type":"strong"}]},{"text":"Resend Requests","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665485365"}},{"type":"strong"}]},{"text":", the client system","type":"text","marks":[{"type":"strong"}]},{"text":" ","type":"text"},{"text":"can request no more than the maximum limit of 2500","type":"text","marks":[{"type":"strong"}]},{"text":" ","type":"text"},{"text":"messages","type":"text","marks":[{"type":"strong"}]},{"text":". T","type":"text"},{"text":"o recover any missed in-flight messages beyond the 2500 message range, t","type":"text"},{"text":"he client system must submit multiple Resend Request (tag 35-MsgType=2) messages. In response to the Resend Request from the client system, Drop Copy 4.0 will respond with a ","type":"text"},{"text":"Gap Fill","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665288724"}}]},{"text":" for all ","type":"text"},{"text":"Administrative","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/665714714"}}]},{"text":" messages and send tag 35-MsgType35=n with tag 43-","type":"text"},{"text":"PossDupFlag","type":"text"},{"text":"=Y for business messages.","type":"text"}]}]},{"type":"heading","attrs":{"level":1},"content":[{"text":"Contact Information","type":"text"}]},{"type":"paragraph","content":[{"text":"For technical development support, contact ","type":"text"},{"text":"Certification Support for Electronic Trading (CSET)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/457412620/Contact+Information#Certification-Support-for-Electronic-Trading-(CSET)"}}]},{"text":".","type":"text"}]},{"type":"paragraph","content":[{"text":"For all other inquiries, please contact ","type":"text"},{"text":"Global Account Management (GAM)","type":"text","marks":[{"type":"link","attrs":{"href":"https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/457412620/Contact+Information#Global-Account-Management-(GAM)"}}]},{"text":".","type":"text"}]}],"version":1}

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