There is an override in Screen 53. The help (F1) for that input says "The program calculates the retirement credit based on taxable pensions and IRA distributions reported on ITP 13, under "Pensions" and "IRA Distributions." Enter the amount to override the calculation. Enter -1 if the amount is zero."
Check the worksheet on page 28 of the instructions. https://www.tax.ohio.gov/portals/0/forms/ohio_individual/individual/2019/PIT_IT1040_Booklet.pdf
If Lacerte got it wrong, use Ctrl + L to send the return to Lacerte with an explanation of why you feel the computation is wrong.