Within Switch, there are two different activity logs found.
One can be found under the Calendar Tab and displays activity done by users in terms of reservations.
This Activity Log is based around the activity of Online Travel Agents (OTAs) such as booking.com, expedia.com and agoda.com.
As seen below it tracks activity such as push and pulls of reservation information between Switch and the OTAs.
This allows users to keep track of reservation and if some aren't synched, it is easier to track down the issue.