If you are unable to generate GST bills in BUSY after upgrading to the latest version, follow these steps to enable GST invoices in BUSY:
1.Go to Administration.
2.Click on Configuration.
3.Select Features and Options.
4.Choose the GST/VAT option.
5.Check if the company was created with a configuration for GST. If it was initially configured under VAT, you won't be able to create GST invoices.
6.Take a backup of your company data.
7.Enable GST/VAT Reporting.
8.Go to Transactions, select the appropriate voucher type, and add the voucher.
9.In the voucher, choose the sale/purchase type (Local or Central) as required.
10.Now, you can generate GST invoices using BUSY.
11.If you Already Generated any sales, sales return, purchase, or purchase return voucher has been entered, the GST/VAT option cannot be changed