I have created an .csv file with 31 fields per row. I created the format, and the data appeared correctly. The dataset shows the 4 files-of-data. When I click on a file/symbol, I get an error message "Runtime error: Mutating a value collection derived from a dictionary is not allowed." I cannot guess how to proceed from here. What would you recommend?
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Unfortunately, this is a known deficiency in 5.4 that affects the ASCII provider. You'll get the error message especially if you try to change the scale of a symbol that has custom data series defined. The error will come away if you re-create the dataset without the custom fields. Please create a support ticket for this one, tia.
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I will create the support ticket, but is there any way to get access to the customer fields now? For instance could I create a unique symbol that was opened as a second symbol in a script and then access the fields that way?
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The error should not appear if you:
1. Use All data in the Data Range selection box.
2. If limiting the Data Range (i.e. not using All data), do not select a higher bar scale than native (i.e. if the underlying time frame is Daily, leave it as is).
Optionally, call Fidelity support to downgrade to 5.3.
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