My prior year (2018) state tax payment actual filled amount is incorrectly showing in turbotax schedule A while calculating the itemized amount, how to correct this?

Is it showing your 2018 tax refund?  (From your Form 1099G)  Or perhaps your 2019 state income tax paid (from your Form W-2 and estimates entered?  

 

On Schedule A I would expect to see your 2019 withholdings and payments, information that comes from your W-2 and other entries and not your 2018 tax return but I am not certain if that is what you are seeing. 

 

If you could share a little more information about exactly where you see the information in the program this could help us to troubleshoot (or explain) a little better!