Good afternoon,

Background: I have created a Customer Order which has as Customer customer ABC, and as customer to pay the invoice, a different customer XYZ.

Issue: Then, after I create the preliminary customer invoice, I cannot create post it as I encounter this error that Customer does not have a default Tax Book.

Other details: The system uses Italian localization, but is fine configured, both customers have the default Tax Book defined, and in order to investigate, I have created 2 other customer orders, one for each of the customers, where the payer is the same customer code as in the customer order, and in such case I can create the final invoice. 

The Customer Order has a Free of Charge item, where only VAT has to be paid, but we need to create a final invoice that will go on the government portal for VAT purpose.

Did anybody encountered this error before? How did you solved it?