SIMBA SPECTRA update on T1 test environment

Dear Derivatives market clients,

We have updated SIMBA SPECTRA protocol on derivatives market T1 test environment.
In DiscreteAucion message field type for UnderlyingSymbol was changed from String25 to VarString. Please take into account possibility of fragmentation for DiscreteAuction messages.
New message scheme and documentation can be found here: https://ftp.moex.com/pub/SIMBA/Spectra/test/
Production launch date is 05^th December 2022.