To edit generated sales invoices in Giddh log in to your Giddh account.
To search anything in Giddh just press Ctrl+G (for Windows) or Cmd+G (for Mac).
Press Ctrl+G/ Cmd+G and type invoices
Now click on any invoice number & it will open the preview of the invoice
Take the print of your invoice, if you want.
Now Edit the customer details if you want
Edit the product, rate, discount, and taxes here
After that click on update sales.