Incorrect DS160 number on Dropbox appointment | Urgent advice please


On September 11,2020 my spouse dropped her documents at the visa center. I just realized today( September 13 ,2020) that her appointment has old DS160 number on it which was 2 years old, but she carried a newly filled DS160 to the document drop of center. The center has collected all the documents and didn’t raise any question. Does that mean is it okay to have an old DS160 number on the appointment letter? Or will the visa get rejected for this reason? if so, Is it possible to take any action now to prevent chances of rejection?

Appreciate your advise/help.

Thank you.