Schedule D: Line 16 does not include capital asset sales because you have exceeded the maximum number of sales supported for individual reporting.

[MonikaK1]

TurboTax is equipped to handle around 10,000 individual transactions per brokerage account.

If you hit the transaction import limit, you can enter a summary for each sales category.

Your brokerage statements should include a summary of your transactions, grouped by sales category, for example, Box A short-term covered or Box D long-term covered.

See this help article for more information.