Once a receipt has been issued, you can’t make additions or edits to it. Your billing receipt is based on the information you provide at the time of booking.
You can, however, make changes to your itinerary after you’ve booked. This includes adding information like:
Guest names and number (editable until your reservation ends)
Business or billing addresses (editable at any time)
Passport numbers
Date of birth
Guest names
Tax identification numbers
Learn how to add business information onto your itinerary.