The IT-112-R is completed if you want to claim a resident, or part-year resident, credit for taxes paid to another state, local government, or the District of Columbia.
Line 1 A and B are Wages, salaries and tips, etc. So, this information would come from a W-2 you have. The IT-112-R will automatically generate if taxes paid to another state are entered from the W-2.
Thank you for the opportunity to answer your questions @Mydearman
All the best,
Marc T.
TurboTax Live Tax Expert
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