No this is not covered by the accuracy guarantee ... all imported information must be reviewed and confirmed by the user PRIOR to filing the return .... since this was not caught you must wait to see if the IRS catches it when they process the return which they should if the box 4 amount that should be $2100 was reported as zero.
If you do need to amend, then all you will do after starting the amendment process is to go back to that 1099-R and make the corrections needed ... you may need to delete the 1099-R and enter it again manually. Also you will need to amend the state return as well if this effects it too.
