iLink SBE Schema Update
Starting January 25, 2026, CME Group will begin implementing new iLink SBE schema version 9 to support the upcoming initiatives on CME Globex.
New Order Cross Enrichment
Mass Quotes and Quote Cancel Enhancements
CME FX Link Enhancements
New Environment Indicator
More information regarding these initiatives will be published in future CME Globex notices.
Contents
Revision History
Date | Description |
|---|---|
November 19, 2025 | New Release and Production Launch for SBE Schema Version 9 - added these Market Segment IDs:
New Release iLink SBE Schema Version 9 Launch Schedule - changed to Thursday, |
November 13, 2025 | New Release and Production Launch for SBE Schema Version 9 - added these Market Segment IDs:
|
November 6, 2025 | Added rows to For Future Initiatives table for Template IDs 545, 563, and 571. |
November 4, 2025 | Renamed “CME Swap-Based Event Contracts” to “CME Event Contracts II.“ |
November 3, 2025 | Updated Environment/MSGW/Production/Templates - available on January 25, 2026. Added “90 - CME Swap-Based Event Contracts” to launch schedule:
Added row under For Future Initiatives: Template ID 571 - New Mass Quote Acknowledgment. Added info box under Schema Version 9 Launch Schedule “Client System using version 8 decoder must use the blockLength from the version 9 message's header received from CME Globex to correctly parse the data.” Changed bullet text “Client systems can send iLink messages using version 8 or 9 until the version 8 decommission date.” |
October 31, 2025 | Added launch dates for the OESGWs under Key Customer Events and Dates |
October 29, 2025 | Corrected New Release to Thursday, November 13, 2025, under iLink Schema Files. |
October 22, 2025 | Initial publication of this pending client impact topic. |
Key Customer Events and Dates
iLink Schema Update: Phased Launch | |||
|---|---|---|---|
Markets | Current Version | Version 9 | |
New Release | Production | ||
Listed derivatives | Version 8 | Starting November 13, 2025 | Starting January 25, 2026 |
BrokerTec | Version 8 | TBD | TBD |
EBS Market and eFix Matching Service | Version 8 | TBD | TBD |
Testing and Certification Requirement
Certification is not required for customers for the iLink SBE schema version 9.
Starting November 13, 2025, the new version 9 schema will be available for customer testing in New Release. CME Group strongly encourages all customers and system providers to test the new iLink schema in New Release before production launch.
Schema Version 9 Launch Schedule
In order to ease customer development efforts, the new iLink SBE schema files will support Template Extension.
After the launch date for each market segment:
CME Globex will only send messages using version 9.
Client System using version 8 decoder must use the blockLength from the version 9 message's header received from CME Globex to correctly parse the data.
Client systems can send iLink messages using version 8 or 9 until the version 8 decommission date.
Schema Version Support
Date | Messages from Client | Messages from CME Globex |
|---|---|---|
Currently | V8 for all market segments | V8 for all market segments |
January 25 through February 22: Phased Launch | V8 or V9 for market segments that support V9 | V9 for market segments that support 9 |
Sunday, February 22 | V8 or V9 for all market segments | V9 only |
TBD | V9 only | V9 only |
iLink CGWs and MSGWs will be launched as follows:
New Release iLink SBE Schema Version 9 Launch Schedule
iLink SBE Schema Version 9 New Release Launch Schedule | |||
|---|---|---|---|
Market | Market Segment ID | Description | New Release Launch |
Listed derivatives | 50 52 58 60 68 72 76 78 12 | CME Interest Rate Options CME FX Options CBOT Interest Rate Options CME and CBOT Commodity Options; Bursa Malaysia Listed derivatives CME Equity Futures II; CBOT Equity Futures CBOT and CME Equity Options; excluding S&P NYMEX Metals, Softs and Alternative Markets Futures; COMEX Futures NYMEX Emissions and Non-Crude Energy Futures CME Globex Order Entry Service Gateway for all MSGWs | Thursday, |
54 56 64 70 80 82 84 88 6
| CME Equity Options - S&P Options NYMEX Emissions Options; NYMEX Energy, Metals, Softs and Alternative Markets Options; COMEX Options; DME Options CME Equity Futures - E-mini S&P CME, CBOT and MGEX Commodity Futures DME Futures; NYMEX Crude and Crude Refined Energy Futures CME and CBOT Interest Rate Futures CBOT Interest Rate Futures CME FX Futures and FX Link CME Globex Order Entry Service Gateway for all CGWs *All Convenience Gateways | Thursday, | |
| 74 90 4 | CME Crypto Futures and Options; Event Contracts CME Event Contracts II Event Contracts II Order Entry Service Gateway | Thursday, |
Production iLink SBE Schema Version 9 Launch Schedule
iLink SBE Schema Version 9 Production Launch Schedule | |||
|---|---|---|---|
Market | Market Segment ID | Description | Production Launch |
Listed derivatives | 50 76 12 | CME Interest Rate Options NYMEX Metals, Softs and Alternative Markets Futures; COMEX Future CME Globex Order Entry Service Gateway for all MSGWs | Sunday, January 25, 2026 |
52 58 68 72 78 | CME FX Options CBOT Interest Rate Options CME Equity Futures II; CBOT Equity Futures CBOT and CME Equity Options; excluding S&P NYMEX Emissions and Non-Crude Energy Futures | Sunday, February 1, 2026 | |
54 56 60 70 | CME Equity Options - S&P Options NYMEX Emissions Options; NYMEX Energy, Metals, Softs and Alternative Markets Options; COMEX Options; DME Options CME and CBOT Commodity Options; Bursa Malaysia Listed derivatives CME, CBOT and MGEX Commodity Futures | Sunday, February 8, 2026 | |
64 74 80 82 84 88 90 4 6 | CME Equity Futures - E-mini S&P CME Crypto Futures and Options; Event Contracts DME Futures; NYMEX Crude and Crude Refined Energy Futures CME and CBOT Interest Rate Futures CBOT Interest Rate Futures CME FX Futures and FX Link CME Event Contracts II Event Contracts II Order Entry Service Gateway CME Globex Order Entry Service Gateway for all CGWs *All Convenience Gateways | Sunday, February 22, 2026 | |
iLink SBE Schema Update
With this change, the iLink schema file will be modified as follows:
Upon Version 9 Launch
iLink Schema Update | ||||
|---|---|---|---|---|
Market | Version 9 | Update | Message Impacted | Template IDs |
Listed derivatives | New Order Cross Enrichment | Add new Request for Cross message to support Cross Type (tag 549) selection from the following enumerations:
|
| 566 |
Listed derivatives BrokerTec Markets | Execution Reference Identifier | Add field ExecRefID (tag 19) to Trade Addendum messages to reference back to the original ExecID (tag 17) in Trade Execution Report for each outright, spread, and spread leg trade. | 548 549 550 | |
All Markets | Common Trade ID | Add field MDTradeEntryID (tag 37711) to Trade Addendum Outright messages. | 548 | |
Schema Attribute Changes
| Update semantic type from “Int” to “Qty” for the following fields:
| 525 548
| ||
Update description for MMProtectionReset (tag 9773) to: Returning the value as sent by customer in the inbound Mass Quote message for Market Maker protection reset. | 545 | |||
Update description for MMProtectionReset (tag 9773) to: When Quote cancelation is triggered by Market Maker protection and all resting quotes are cancelled for that particular group (297=3) this tag returns value of tag 9773=MMProtectionReset as previously submitted by client system. In the quote cancel acknowledgements solicited by customer this tag will be set to 0. | 563 | |||
Update description for SecurityID (tag 48) to: Security ID as defined by CME. For the security ID list, see the security definition messages. | 516 | |||
Update description for SelfMatchPreventionID (tag 2362) to: Used to prevent orders from the same firm matching with each other. Each message sent with this tag and the same matching value will be eligible for Self-Match Prevention. | 519 | |||
For Future Initiatives
iLink Schema Update | ||||
|---|---|---|---|---|
Market | Version 9 | Update | Message Impacted | Template IDs |
Listed derivatives | Mass Quotes and Quote Cancel Enhancements | Add new field QuoteEntryControl (tag 39034) to Mass Quote Acknowledgment message. |
| 545 |
Mass Quotes and Quote Cancel Enhancements | Add the following new fields to Quote Cancel Acknowledgment message:
| 563 | ||
Mass Quotes and Quote Cancel Enhancements | Add new Mass Quote message and three new Quote Cancel Request Messages. |
| 567 568 569 570 | |
Mass Quotes and Quote Cancel Enhancements | Add new Mass Quote Acknowledgment Message. | New Mass Quote Acknowledgment | 571 | |
CME FX Link Enhancements | Add field ContraGrossTradeAmtl (tag 5542) and ContraCalculatedCcyLastQty (tag 5971) for the CME FX Spot+ spread leg traded from FX Link Spread trading. | 527 550 | ||
All Markets | Environment Indicator | Add new field EnvironmentIndicator (tag 39032) to identify which environment clients initiated connection in the very first message sent from CME Globex to client system. | 501 502 504 505 | |
iLink Schema Files
To support the new iLink schema rollout, the CME SFTP site will be updated as follows:
New Release
Environment/MSGW/NRCert/Templates | ||
Schema Version | Current State | Thursday, November 13, 2025 |
V8 | ilinkbinary.xml | ilinkbinary_v8.xml |
V9 | n/a | ilinkbinary.xml |
Production
Environment/MSGW/Production/Templates | ||
Schema Version | Current State | Sunday, January 25, 2026 |
V8 | ilinkbinary.xml | ilinkbinary_v8.xml |
V9 | n/a | ilinkbinary.xml |
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