1099-B RSU question

Hello and good day, everyone!

 

I have, hopefully, a simple question.

 

I had a bunch of RSUs fully vest in 2021 and I ended up selling those the next day for a small loss. I received the 1099-B from Fidelity and it shows $0 for the cost basis and a code that indicates "cost basis not provided to the IRS." (Code B I believe).  They also sent a supplemental form that shows the actual cost basis.

 

I am avoiding the TurboTax RSU interview as it is a pain. My question is, should I enter $0 for the cost basis to match the 1099-B and then say the cost basis is incorrect and then provide the real cost basis? Or, should I just enter the real cost basis at the beginning? I have tried it both ways and there is no difference in the tax calculation, which I expected. I just don't know the proper way to report this.

 

Thank you in advance!