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Backtest error An item with the same key has already been added

Hi All,
I am getting this error ... this is day one for me and I have no idea what is going on.

Backtest Error: Error initializing algorithm: Algorithm.AddSecurity(): An item with the same key has already been added.
Update Backtest








Hi Phillip, can you please paste your code so we can help?
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Hi Jared,
Thanks for the reply.
I think I might have figured it out.
I have tick data and second data installed for the particular symbol.
How can I delete the existing data ?
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Hey Phillip, I'm afraid its very hard to help without any source code to debug. You can only have one resolution of data per symbol -- if you've added the same symbol twice it will not work as you're expecting.
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The material on this website is provided for informational purposes only and does not constitute an offer to sell, a solicitation to buy, or a recommendation or endorsement for any security or strategy, nor does it constitute an offer to provide investment advisory services by QuantConnect. In addition, the material offers no opinion with respect to the suitability of any security or specific investment. QuantConnect makes no guarantees as to the accuracy or completeness of the views expressed in the website. The views are subject to change, and may have become unreliable for various reasons, including changes in market conditions or economic circumstances. All investments involve risk, including loss of principal. You should consult with an investment professional before making any investment decisions.


Ok... thanks Jared.
Will have to look at it when I wake up.
12:30PM here.
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Update Backtest





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The material on this website is provided for informational purposes only and does not constitute an offer to sell, a solicitation to buy, or a recommendation or endorsement for any security or strategy, nor does it constitute an offer to provide investment advisory services by QuantConnect. In addition, the material offers no opinion with respect to the suitability of any security or specific investment. QuantConnect makes no guarantees as to the accuracy or completeness of the views expressed in the website. The views are subject to change, and may have become unreliable for various reasons, including changes in market conditions or economic circumstances. All investments involve risk, including loss of principal. You should consult with an investment professional before making any investment decisions.


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