On Thursday, January 4, 2024, MEMX Options released new versions of its MEMO FIX and FIX Drop Specifications. Version 1.6C can be found here using the “upcoming version” link. All previous versions of MEMO FIX and FIX Drop version 1.6 will be deprecated. Release date for Production to follow, 1.6C is already available in the MEMX Options Development Environment (MODE). Members that would like to upgrade to version 1.6 MEMO FIX or FIX Drop in MODE should reach out to Market Ops. Updates are listed below and in the specification Errata included in the download:
MEMO FIX v1.6C
- Added TrdMatchID (FIX tag 880) to Cancel/Correct message
FIX Drop v1.6C
- In Trade Cancel/Correct Message: Added new FIX Tag 880 TrdMatchID
**If your Firm currently uses version 1.6 in MODE you will receive tag 880 in your MEMO FIX and FIX Drops.**
Our Market Operations and Member Experience teams are here for any of your questions.
MEMX Market Operations
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