I already efiled, was rejected for claiming my son as a dependent because my ex already did. Do i amend if i take dependent off and add 2 more different dependents?

[kerriP · Accepted solution]

If your return was rejected when you tried to E-File, then you have NOT filed your tax return.  There is no need to Amend.  There would be no record right now of your filing a return.

The term "Amend" a return is used when a change is needed to be made to a return after the IRS had received, processed and sent you your refund (or collected tax due.) 

So, if you need to remove a dependent and then add another to your 2017, you can make those changes to your return,  in Turbo Tax and then  go ahead and E-File.