Ok ... switch to the FORMS mode and look down the list of forms on the left ... do any of them have a red ! mark next to them ? If so this is where there is an error that needs to be attended to so click on that form to view it in the window. Then look for any boxes colored in reddish pink ... that is what needs to be corrected. Also when in the FORMS mode, above the list, should be the option to do an error check ... once you make the correction click on it to see if it goes away.
If you still cannot make the correction then contact TT support so they can walk you thru it ...
See this TurboTax support FAQ on how to contact Support - https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-contact-turbotax/00/26991
