Rejected Federal taxes

Turbo Tax reported that my taxes were rejected because I had checked "Form 4972ind" and had failed to attach the  form 4972 which is required if you check Form4972ind. In fact I don't recall checking any such form, and cannot find it on any of my completed tax forms. As a result I did not submit form 4972.

Turbotax claims they will walk you through all the assistance you need , but in fact, there is no information. I called Customer Service and the automated line was useless.