How to convert quotation to invoice By Go GST Bill - January 3, 2020 0 8 FacebookTwitterPinterestWhatsApp *This feature is only available for Premium subscribers. Please follow the steps to convert Quotation to Sale Invoice. Step 1 : Click on “Other Documents” menu & select Quotation from the sub menu. Step 2 : From the Quotation list (below the print button) click on the arrow button and select “Convert to Sale Invoice” option. Step 3 : Verify/update the available details & click on “Save” button below.