After you file

Ok ... hate to tell you but you will NOT get any credits for the kids on any returns filed before you got their SS#s issued.  So even if you put the kids & credits on the prior year returns do not expect to get the credits ... the IRS will stop them.  If you used a tax program it will not warn you of this situation which is why you have code 570 ... this will be cross checked by a human before the return is fully processed ... expect an IRS letter in the mail.