Need two types of sales invoice

We have two different types of sales invoice here in Greece.
One for providing services and one for selling goods.
How can we generate a “service invoice” when there is a service in the item list automatically, or a simple sales invoice when there are only goods in item list?

I tried to play with the Document Naming Settings.
In here I created a new series list for “service invoice” the title of the invoice still reads “Sales invoice” which is not acceptable in Greece’s tax system. It has to read “Services invoice”

Furthermore, when one subscription autogenerates an invoice, is there a way to select which series will the invoice be of?

Thank you


You can use the Print Heading and Create the Service Invoice under it. This will print the Service Invoice or Sales Invoice Based on selection.