If you got an email about your reject, follow the link to go through the steps to fix your return. If you didn't, open your return to find the rejection reason. The program might guide you directly through making the change. If it doesn't, navigate to the program area to address the cause of the rejection, then proceed to file.
https://ttlc.intuit.com/questions/1901491-how-do-i-fix-a-rejected-return