After the return was successfully efiled, I went to open the return to print the efile acceptance form and a message popped up saying "ProSeries has detected that amounts calculated in this return have changed since return was efiled."  When I display the change, it shows the entire $1,800 Recovery Rebate Credit has been eliminated. But there is no explanation as to why the Recovery Rebate Credit is being eliminated.  Taxpayer is Single, turned age 24 on 7/1/20, has W-2  income of $25,000, interest income of $50, and is not a dependent and no one has claimed him as a dependent.  I thought maybe ProSeries had an update that changed the Recovery Rebate calculation after I efiled.  But that is not the case.  I created a new return with the identical facts and the Recovery Rebate Credit is $1,800 and passes ProSeries review.  Any thoughts as to what caused ProSeries to change the calculation of the Recovery  Rebate Credit from $1,800 to zero after the return was successfully efiled?