If you are using TurboTax Desktop, you can switch to "Forms mode" by clicking on "Forms" in the blue bar at the top of your screen. Your Forms will display on the left side of your screen.
You can scroll through these to find your Form IT225 and click on it to edit. A red exclamation mark indicates an error.
Also, at the top right of your screen you will see "Forms in My Return" you can click on "Errors". Your errors should be listed there.
It will look like this to switch to "Forms Mode":
It will look like this to find your errors, click on "Errors" to display:
Click here for additional information on manually editing a form in TurboTax.