15 minute bar calc onEachTick Index Error

[Skifree]

I have a strategy using 15 min intervals, and using TickReplay seems to work in the analyzer. When I run it live and calculate on OnBarClose, it works fine. When I use onEachTick, I get an index error at bar 1000+, when I only require 500 bars. I'm using both primary data series and volumetric, and both work in OnBarClose.

Why might this happen for the different calculation, only on Live?

[NinjaTrader_ChelseaB]

Hello Skifree,

Historical and real-time is processed differently.

https://ninjatrader.com/support/forum/forum/ninjatrader-8/strategy-development/94098-isfirsttickofbar-vs-onbarclose-for-backtest-live?p=773377#post773377

What is the line of code and specific index causing the error?

[Skifree]

Thank you Chelsea,

It took me a while but I ended up up figuring out what that thread shows. Running the strategy live, it actually works well.