After you booked on the SAP Training and Certification Shop you will see a message that confirms that you have placed your order successfully however this does not mean that you are booked on the course. You should receive a "booking confirmation" email that confirms all of the details of your booking. Please read carefully and check that all details are correct and if anything is incorrect please notify the respective Education Center (whose email address is listed at the bottom of the page) immediately.
If the process is still unclear please contact the Education Center and provide the Order Number to the SAP Education Specialist handling your query. The Order Number can be found in the Order Summary section or in the My Account section.