To modify the bills through bulk updation in BUSY, follow these steps:
Step 1: Take the latest backup of your data.
Step 2: Go to administration section then click on bulk updation tab.
Step 3: Choose bulk voucher creation and modification then select required voucher type then click on configure tab.
Step 4: Now, create format then select each and every field which you have entered in voucher then save it.
Step 5: Next, Click on modify voucher, update the created format then click on update.
Step 6: Specify the voucher series, starting and ending date, click on load vouchers then save the details after modification.