Payment process from the customer viewpoint

Once the customer has placed products in the shopping basket, he can start Google Checkout. Buttons for this are available in the mini-shopping basket and in the shopping basket itself.
The customer is transferred to the Google Checkout page and must register there. If he does not yet have an account, this is created automatically after entering the credit card data.
At Google Checkout, the customer sets the payment and delivery data and finalises the payment. The order is filled out with Google data and not with the data that are in the shop system.
After successful completion, a link is shown to the customer that allows him to return to the shop. He receives an order confirmation e-mail with the Google order number that is shown in the administration as a transaction number.