For a better understanding of this article, it is recommended that you know the concept below:

When advertising your listing in the vertical rate groups format, you will be prone to receive split reservations on your listings.

These reservations can happen from the routines below:

Reservations through your website
The guest will be able to make a reservation occupying several listings of a group, by matching the availability of calendars in the period searched.
As with sales channels, there will be no specific notice about this during the reservation process, so it is worth noting this in your business policies.
Reservations made through sales channels (channel manager)
In sales channels, reservations will be created as usual and, by default, guests do not receive special notices about listing in multiple listings, so it is recommended that you hide the availability of some listings to the channels, because then you will have space in the calendars to merge reservations and, thus, avoid surprises on the part of guests.

Now that you already know how the split reservations happen, how about checking out more related subjects?