If the transaction was performed the same day, reverse using Tool #31 "Reverse Tran/Adjust Tlr Drawer (Same Day)" and then rerun transaction correctly. 

If the transaction was performed on a previous date, reverse using Tool #365 "Effective-Dated Transfers."  CU*BASE will automatically adjust the dividend/interest amounts for you. If you want to be able to override the dividend/interest amounts, use Tool # 353 "Effective-Dated Account Adjustment" instead.