Tran 1 credit

ITC - CGST/SGST A/c. ...Dr
To Stock A/c ...........Cr

sir I have filed tran 1 regarding transitional credit of vat . that credit was reflecting electronic credit ledger. but at the time of filing of July month gstr3b return again I have taken 50% of cgst and 50% sgst .then after electronic credit ledger amount was increasing.that time I understood wrongly taken.now what is the rectification