No, this is not on your W-2. This is almost certainly a reference to Indiana form IN-OCC.
The form says, "Complete this schedule if you are reporting any of the following credits: Hoosier Business Investment Credit; Hoosier Business Investment Credit - Composite; Hoosier Business Investment Credit - Logistics; Hoosier Business Investment Credit - Logistics - Composite; Natural Gas Commercial Vehicle Credit; Natural Gas Commercial Vehicle Credit - Composite; Redevelopment Tax Credit; Redevelopment Tax Credit - Composite; School Scholarship Credit; School Scholarship Credit - Composite; Venture Capital Investment Credit; Venture Capital Investment Credit - Composite."
If you have entered one of these into TurboTax, you need to go back and revisit it.