1. Go to Accounts-->Accounts-->Invoice List
2. Invoice List screen will appear
3. Click on Sales Register button, a pop-up will open
4. Select 3 filters- 
  • Date : from date - to date
  • Invoice Document Type : Tax Invoice
  • Status : Approved
5. Click on Go button
6. Sales register will get downloaded
7. This file will be helpful in case of filing GST