V8 Staging to Prod DifferencesMessagesExchSecurityDefinitionVersion: 8.4.12.1Schema Differences: ExchSecurityDefinition (ID: 4400) V8 Message Definition 5 removed PRIMARY KEY#V8 Field NameType#V8 Field NameType10exchangeTickerTickerKey 11exchangeenum : StkExchBODY#V8 Field NameType#V8 Field NameType100primaryCurrencyenum : Currency101isinString(12)102primaryTickerTickerKey