In the article master data, deviating articles can be configured for extra beds. Multiple articles can also be used, separated by commas without spaces, e.g., to differentiate between the first extra bed and further extra beds. Children's articles are prioritized and taken from the extra bed. For articles billed "per guest in room," the extra bed must be configured as a normal overnight stay for statistics. For articles billed "per room," the extra bed is intended as an extra without an overnight stay, and the statistics count fully towards the room article. The extra bed article is set after a reassignment and is therefore final (except for child discounts).