Release of SPECTRA 6.3

Dear Derivatives Market clients,

We inform you that SPECTRA 6.3 release is scheduled to be launched into production on December 16^th 2019.Additionally to newsletter №123 ‘SPECTRA UAT update to v.6.3’ from October 10^th 2019 we inform you that by request of market participants the following FAST-message template update was removed from the upcoming release:

• "TheSecurityDefinition message template for theFUT-INFO and OPT-INFO groups has been changed to have id="17" instead of id="16", and a new "Flags" field has been added to the template. Thus, theSecurityDefinition message template is now identical fortheFUT-INFO, OPT-INFO, IQS-FUT-INFO, IQS-OPT-INFO groups"