If you don't enter each sale you are summarizing and taking the mail-in option unless TurboTax accepts a PDF list of your details.
the proceeds from the sale of a security, asset, or personal item on any date must appear on a line on Form 8949 with that "Date Sold".
IRS requires your Box C/F details to be listed on some Form 8949 (e-Filed, or mailed),
or on your other forms (e.g. spreadsheets) which have the same information and in the same manner as Form 8949.
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