On Friday, February 2, 2024, MEMX Options released new versions of its MEMO SBE Specifications. Version 1.5B and 1.6B can be found here using the “upcoming version” link. All previous versions of MEMO SBE version 1.5 and 1.6 will be deprecated. Release date for MEMX Options Development Environment (MODE) is Tuesday February 13, 2024 and production to follow. User acceptance test (UAT) date to follow scheduled for Saturday, February 10, 2024. Updates are listed below and in the specification Errata included in the download:
MEMO SBE v1.5B and v1.6B
- Added reason to MassCxlRejReasonCode: 20 – InvalidOptionsSecurityIDForUnderlier
- Made UnderlyingOrSeries on MassCancelRequest message a REQUIRED field.
- Made Underlier on MassCancelRequest message a REQUIRED field.
- Made UnderlyingOrSeries on PendingMassCancel message REQUIRED field.
- Made Underlier on PendingMassCancel message REQUIRED field.
**If your Firm currently uses the MassCancelRequest without specifying either UnderlyingOrSerie or Underlier, your MassCancelRequest will be rejected once this update is released .**
A UAT session will be available, in MEMX Options production, between 9:30 AM ET and 11:00 AM ET on Saturday, February 10, 2024.
Our Market Operations and Member Experience teams are here for any of your questions.
MEMX Market Operations
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MEMX Member Experience
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