Thank you for your reply so quickly!
Please see the attached proforma in Excel; I don't require the Product/Service to appear on the tax Invoice and the Description could be mapped from the "Reg:" field (or a number of fields if that works).
Thanks for the update. Unfortunately, I am not able to see the attachment you've sent through.
With the Custom Invoice templates we are still limited to the format of the in-built templates however you can go to the Master Template and untick Products and Descriptions to remove those columns.
If you're still having trouble with mapping the template please contact the Support Team for further assistance.