If you went through the File section and submitted it then it is too late to fix or add it. You now have to wait until the IRS opens on January 24 and either Accepts or Rejects it. If they reject your your for something you can fix it and resend it. But if they accept it you have to wait until they are done processing it and you get the first refund. Then you can file an Amended return to fix it.
What happened? Did you not enter the 1099R or didnt the right taxable amount show up?
