Sales invoice to say "VAT Invoice"

I am from Mauritius.

The VAT law states that all company registered for vat should invoice its client a VAT invoice.

Could you please indicate whether there is a way to change the “Invoice” to “VAT Invoice” on Sales module.

This is something that’s hard-coded in the program just like in-built tax codes are. Is VAT rate 15% in Mauritius?

Yes, vat rate is 15%. by the way, can i build customized vat report.

When you use this in-built tax code on sales invoice in the latest version (16.4.32), the invoice will say “Tax Invoice” at the top.