From the SAP Business One Main Menu, choose  Financials Journal Vouchers .

The Journal Vouchers window appears.

In the upper table of the window, choose the journal voucher from which you want to delete entries.

The lower table of the window displays the entries recorded in the selected voucher.

In the lower table, select the row(s) for the entries you want to delete.

In the menu bar, choose  Data Delete Row .

Choose Update.