To create an invoice in BUSY, you need to follow these steps:
Step 1: Open your company and go to Transaction menu.
Step 2: Select voucher type such as Sales, Purchase, etc and click on Add.
Step 3: Enter all the necessary details such as Date, Vch Number, Sale Type/Pur Type, Party, Item, etc and save the transaction.
Step 4: After creating it you can send that invoice to your customer by click on the SMS, EMAIL and BUSY BNS.
Note: You need to make sure by which mode you want to send invoice that is configured in your company.