Yes, you can attach document (related to sale transaction) in sale transaction.
- Go to Transaction > Sale.
- Fill the transaction details.
- Click on Attach Documents tab.
- Click on add button and select document from your system.
- Now click on OK/Apply button.
- You can add multiple documents in one transaction.
![sale-doc](https://innoventry.io/help/assets/images/saleImages/sale-doc.png)