Self assessment tax deposite

I have deposited self assessment tax for ay 2019-20 but by mistake I mentioned the ay as 2018-19 in bank form and accordingly bank issued receipt mentioning ay as 2018-19 and this is also reflected in 26AS for ay 2018-19. ITR for at 2019-20 is prcessed and the said amount is raised as demand. Please advice me how the deposite be transferred to ay 2019-20. ITR for ay 2018-19 is filed with ITO manually and ITR for 2019-29 is filed on line and processed.