Reason Order Mass Cancel Request was rejected
Valid values:
| '0' | MassCancelNotSupported |
| '1' | InvalidOrUnknownSecurity |
| '2' | InvalidOrUnknownUnderlyingSecurity |
| '3' | InvalidOrUnknownProduct |
| '4' | InvalidOrUnknownCFICode |
| '5' | InvalidOrUnknownSecurityType |
| '6' | InvalidOrUnknownTradingSession |
| '7' | InvalidOrUnknownMarket |
| '8' | InvalidOrUnkownMarketSegment |
| '9' | InvalidOrUnknownSecurityGroup |
| '10' | InvalidOrUnknownSecurityIssuer |
| '11' | InvalidOrUnknownIssuerOfUnderlyingSecurity |
| '99' | Other |
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