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HIGH_1 and LOW_1 will update in real-time when there are new high or new low trades during trading hours.
However, they can be in a separate update message from the TRDPRC_1.
As Warat mentioned, this functionality is dependent on the linehandler for that venue. For most exchanges, Low and High are included in the trade price packet, which sets the new Low/High.
I got the error message “The record could not be found”
RFA login fails with unreadable characters.
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Is it possible to get TRADE_DATE on every message?
IllegalStateException on OMMConnectionIntSpec