Endpoint: https://api.myallocator.com/callback/ota/{ota}/v202203 (replace {ota} with your channel ID)

Use this callback to check if a room (rateplan) is available for booking.

Although information about specific room (rateplan) availability is supposed to be present locally on a channel side,
we would like to provide an opportunity to double check if a room (rateplan) is available prior to creating a
reservation. Using this callback ensures that due to a possible technical issue leading to a room (rateplan)
availability numbers not having been (or having been incorrectly / not in time) delivered to a channel, the room
is not overbooked and therefore helps avoid both host and guest frustration when such an over-booking has to be canceled by a host
due to physical inability to accomodate.