How to use QCC to purchase, download and use data locally?

I meant 

Is it  possible to use QCC to purchase data without subscribing to US Equity Security Master? Then is the QCC cost in addition to cost of US Equity Security Master? I'm assuming if I purchase US Equity Security Master that will fix my error.

Hi No Name,

Some datasets depend on the US Equity Security Master. To know which ones depend on it, see the introduction of the dataset listing.

To view the price of the US Equity Security Master, see its pricing tab.

Best,
Derek Melchin

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Hi Derek,

Thank you for your response. I purchased the $600 US Equity Security Master and it looks like once I purchased that, it started using QCC to purchase data, whereas previously it didn't allow me to download any data. I don't see anywhere where it says that I need to purchase the Security Master for certain securities. For example https://www.quantconnect.com/datasets/quantconnect-us-equity-security-master  mentions 27,500 securities but I don't see anything that says you can use QCC to get access this security or Security Master to get access to that security. 

Also, I would have thought that once I purchased the US Equity Security Master it would have not used QCC for my securities, but now it looks like it is always using QCC, and I believe all the securities I am looking for are included in US eq sec master, because they are standard US NYSE or Nasdaq securities, though like I said, I don't know where to check.

For example I am getting these errors (I have 90 qcc left):

20221031 21:59:50.843 ERROR:: ZipDataCacheProvider.Fetch(): Inner try/catch System.ArgumentException: ApiDataProvider.Fetch(): Cost 100 for equity/usa/daily/spy.zip data exceeds
remaining purchase limit: 90

20221031 21:59:50.858 TRACE:: UniverseSelection.AddPendingInternalDataFeeds(): Adding internal benchmark data feed SPY,#0,SPY,Hour,TradeBar,Trade,Adjusted,OpenInterest,Internal
20221031 21:59:50.860 ERROR:: ZipDataCacheProvider.Fetch(): Inner try/catch System.ArgumentException: ApiDataProvider.Fetch(): Cost 300 for equity/usa/hour/spy.zip data exceeds 
remaining purchase limit: 90

20221031 21:59:50.842 ERROR:: ZipDataCacheProvider.Fetch(): Inner try/catch System.ArgumentException: ApiDataProvider.Fetch(): Cost 100 for equity/usa/daily/bndx.zip data exceeds
remaining purchase limit: 90

20221031 21:59:50.842 ERROR:: ZipDataCacheProvider.Fetch(): Inner try/catch System.ArgumentException: ApiDataProvider.Fetch(): Cost 100 for equity/usa/daily/ubt.zip data exceeds
remaining purchase limit: 90

it seems I am being asked to pay double for something that should either be covered by QCC or US sec master, and I could only start using QCC after purchasing US Sec Master. 

I tried both:

"data-provider": "QuantConnect.Lean.Engine.DataFeeds.ApiDataProvider"

and

    "data-provider": "QuantConnect"

and both have the same result shown above when running locally via 

lean backtest dancing_magenta_camel 

Hi No Name ,

The US Equity Security Master tracks US Equity corporate actions (splits, dividends, delisting, and symbol change data). When you subscribe to this dataset, you don't get market data. The US Equities dataset provides market data, and checks whether you have a subscription to the former before you start downloading its data.

Best regards,
Alex

I see, thank you for clarifying !