I'm using a basic universe selection that pulls from coarse at its most basic level and runs the securites through a built-in indicator function (ExponentionalMovingAverage() ).  

I've read from other posts that the issue might be the timeframe I've set my equities to.  I currently have it at hourly.  Although changing it to minute does nothing except for skew my backetst results.  Many securities still pop up in my debug window with the same error.

Can someone more experienced explain what this error means and what I should do to reduce it in my backtests?