To change voucher numbering in BUSY, you need to follow these steps:
Step 1: Go to Administration and click on configuration.
Step 2: Choose the Voucher Series Configuration and select the voucher type such as sales, purchase, etc.
Step 3: Then, select the voucher series and click on Voucher Numbering.
Step 4: Choose the Numbering Type as either Automatic or Manual. Then, set the prefix, suffix, and Starting No. as per your needs and click on OK to save the settings.
Note: It is not recommended to change voucher numbering without taking backup.