In order to request to book, it is necessary to provide all of your visa information, which will be used to complete your request and book the property. But, the owner has the option to refuse your request. VRBO should not require visa info until the owner has accepted the request. Twice, I have given the information, only to have the owner refuse my request because VRBO had not blocked off the previous reservation. It should be approved first, then provide the payment information.