Ask for an invoice addressed to the name of ZappTax in store right before paying for your goods.
Most stores can edit invoices instantly (this function is integrated into their cash register software).
Tell the store staff that you would like to get « an invoice with VAT at the name of a company » and then provide them with the required ZappTax invoice information for the country where your make your purchase (see ZappTax invoice address in France, Belgium and Spain).
Stores have a legal obligation to issue invoices upon request.
You do not have to provide any justification when you request an invoice.
If you wish for warranty or insurance purposes, your first and last name may also appear on the invoice, next to the name and address of ZappTax.
23, rue Jean-Jacques Rousseau
Do not request a tax-free form in store. Do not even mention you are requesting a ZappTax invoice for tax refund purposes -> it may confuse store staff who may automatically issue an in-store tax-free form.
See also questions: