TurboTax gets no information from the IRS after you file your tax return and the IRS accepts it for processing. No one at TT knows what "action" you might need to take or even if you need to take any action. If the IRS wants more information from you they will send you a letter in the mail, and then you will need to follow the instructions in their letter. We cannot guess why they are saying action needed.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**