@chag2020 generally if you have any adjustments to the sale summary (wash sales, AMD etc) or noncovered categories where cost basis is not reported to the IRS, that will trigger the need to send in the details using Form 8453. What's asked for on that form is "Form 8949, Sales and Other Dispositions of Capital Assets (or a statement with the same information), if you elect not to report your transactions electronically on Form 8949"
note also the full 1099B is not required, you don't need to include unadjusted Box A or Box D transactions.
https://ttlc.intuit.com/turbotax-support/en-us/help-article/printers-printing/need-fill-mail-form-89...
you can avoid the mailing by splitting up your 1099B and input these items as "one by one" with the details, and input the balance of your 1099B as summary level, and then check the combined totals on Schedule D line up with your original 1099B. Whether this is feasible depends how many of these items you have, I've done 50 or so to have a clean e-file and avoid the mailing, it doesn't take long to do.
as well as the on-screen messages, if you are using Desktop you can see the status at the bottom of the Capital Asset Sales Worksheet whether the mailing is required or not.
if you are using Online, you can also attach the details electronically as an upload (attachment, not an import) to satisfy this mail-in requirement.
more here
https://ttlc.intuit.com/turbotax-support/en-us/help-article/form-1099-b/need-include-1099-b-return/L...
