To be fair to garydon, if you are accustomed to checking for errors by navigating to/through the forms, it turns out you cannot edit the field for the IP PIN on form 1040. I've been using TT for years AND as a joint filer experience this issue every year (because I tend to skip "other tax situations"), and somehow my default is to navigate to the form where the IP PIN is located and try to edit it there. One cannot.
