Get your taxes done using TurboTax

That means the program wants you to enter explanatory details about a figure.   TurboTax has a lot of places that might require an explanation line.     What were you entering when the program said explanatory details were needed?

 

To get help here you'll need to describe exactly what you are doing and in what topic of the TurboTax program.   Then hopefully someone will be familiar with your issue.