- Master Data Management > Accounts > Voucher Type (M > A > V)
- select Any Voucher Type from the list (Alt + L)
- Change starting number or Prefix as per your need.
- Save(Alt + S)
- Open display of voucher type(Alt + D)
- Select that Voucher type.
- Click Renumber Button (Alt + R).
- It will ask you for your conformation, click 'Yes' or to start renumbering.
For more info on Voucher Type please visit: