I had a few transactions where I sold something short and then it expired worthless. TurboTax asked me to fix and I think I messed up. How do I correct what TT asked me

TurboTax asked me to correct a short sale entry of my  1099-B.  I think I fixed it wrongly and it impacted my taxes. How can I go back and fix it.  I cannot access that entry now. Thanks.