you need the desktop TT software for 2019. you must enter your data so it matches the return you filed - line for line. some items may not need all the detail that was entered on the original return. however, since we can't see your original return we can't tell which items. it may also depend on what you are changing. then save it. then reopen and click on the amend icon. the return can not be e-filed it must be mailed in.
