I have multiple test accounts that use same data source on one instance of Ninja, and I use the DLL interface to communicate to NinjaTrader 8
my DLL handler constantly uses SubscribeMarketData, gets the price then does UnsubscribeMarketData. The time interval is 1 second but I have multiple instances that might overlap. I'm checking MES and MNQ
I get the "unhandled error: there already is a market data handler subscribed" very often. Any ideas what causes this?
here is a screenshot
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