We have items that we sell in Tessitura only through the back office, usually over the phone or by selling to existing constituents who have credit cards on file. We had a customer call who had never purchased from us, to purchase a back-office-only item, but the customer didn't feel comfortable giving us credit card number over the phone. Is there a way for a customer to create a new Tessitura account via TNEW and add credit card info to their account, without making a purchase? Or is there some other trickery anyone can suggest to accomplish this?
99% sure there's no way to have the TNEW payment window pop up unless you are trying to complete an order with a non-zero balance due. The workaround I would probably suggest would be to have the customer make a contribution for the amount due for the order, and then refund that contribution to house credit to use to pay off the ticket order over the phone.
Or purchase a gift certificate for the value of the product and apply it internally to the in-house item.