Turbotax needs to update their software to handle this error. If we manually edit and file taxes, then wouldn't we be submitting something different than what the broker sent the IRS, essentially placing us at risk of audit? I paid a premier price for Turbotax and its ability to import from brokers. If I have to deal with these errors and potentially upgrade to a CPA level account, then it defeats the purpose of doing our own taxes on Turbotax when we should be able to complete with basic imports from brokers. I highly doubt that TD Ameritrade and other large brokers are reporting everyone's 1099's incorrectly for 2020. TurboTax, figure this out!!!
You may need to check your brokerage to see if they are allowing third-party access. Although the following Help Article is for Schwab, it is possible that your brokerage has restricted TurboTax's access to your statements unless you grant consent, and you might need to do something similar to what is described here How can I fix my 1099 import issue?