You are talking about stock transactions.
There could be Mutiple causes of a discrepancy, but the most common is the absence of cost basis.
- Wages and Income
- Scroll to Investments & Savings
- Select Stocks, Cryptocurrency, Mutual Funds, Bonds, Other (1099-B) [Start or Revisit]
- If you already have an entry, select the appropriate broker or add another account.
- Select you broker or follow the interview.
- As you enter the dates and proceeds, there is a check box for The cost basis is incorrect or missing on my 1099‑B
- Use this option to correct any errors to cost basis.
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