I had same issue while filing this and found below article which helped me. Please check if that works for you
https://financetecho.com/new-itr-rules-for-reporting-dividend-income.H T M L
Validation error while filing ITR Form
While validating ITR form users may get validation error for dividend income that Dividend Income must be equal to 1a(i) of Schedule OS-DTAA of dividend-System calculated value of interest expenditure u/s 57(1) of Schedule OS.
The above validation error can be rectified by providing information about accrual receipt of dividend under point 10 of Schedule Other Sources (Income from other sources).
To rectify the error, income tax filer should bifurcate the dividend amount and disclose the amount of dividend received in each quarter of the financial year, then ITR tool will not show the validation error.