Identifies an event related to the mass trading status.
Valid values:
| '1' | OrderImbalance |
| '2' | TradingResumes |
| '3' | PriceVolatilityInterruption |
| '4' | ChangeOfTradingSession |
| '5' | ChangeOfTradingSubsession |
| '6' | ChangeOfSecurityTradingStatus |
| '7' | ChangeOfBookType |
| '8' | ChangeOfMarketDepth |
| '9' | CorporateAction |
Used in: