You can create Reverse Invoice LD / GST through Accounts app.
New -> Sale -> Reverse Invoice LD / Reverse Invoice GST
Click on Order -> Invoices -> Reverse Invoice. Reverse Invoice list will appear.
Step-1: Select the reverse invoice from the list. Right click on it and select Edit Invoice option.
Step-2: Edit the details and click on Save.
Please check your uploaded file extension.
Please Select a file.