The OTA_HotelAvailNotifRQ message is used to communicate product level availability restriction values to client systems.

The OTA_HotelInvCountNotifRQ message is used to communicate room level inventory values to client systems. Each message contains inventory for one or more room types for one hotel for one channel.

The OTA_HotelRatePlanNotif message is used to communicate rate amount values to client systems.

Availability is used to update Stay Restrictions to the SynXis CR. This message is used to communicate updates to: Hotel, Room, Rate, Product, Rate Category, Sell Limit, Sell Threshold and Open/Close stay restrictions.

The ARI Sync- Availability (OTA) (OTA_HotelBookingRuleNotifRQ) is used to limit the availability for a hotel.

The OTA_HotelInvBlockNotifRQ may be used to send a notification of one or more new inventory blocks. This message may also be used to modify or cancel one or more existing inventory blocks.

The ARI Sync - Hurdle (OTA) is used to set the status for an inventory block, a rate plan, or an inventory code.

The ARI Sync-Inventory (HTNG) is used to notifiy a booking source of the inventory amount available at a specific hotel property.

The ARI Sync -  Inventory (OTA) is used to notify a booking source of the inventory amount available at a specific hotel property.

The ARI Sync - Rates ( HTNG) is used to communicate the creation of new rate plans and modification of existing rate plans for one hotel for one rate plan.

The ARI Sync- Rates (OTA) is used to provide a notification of a new rate plan created for a hotel, and to synchronize the rate plan between systems for booking.

The OTA_HotelCacheChangeRQ message allows partners to query SynXis CR to identify rate and availability changes in SynXis CR, so that the partner can send a targeted shop to SynXis to get the updated availability.  Please note that the ARI Push Interface contains XML Header.

The Get Room Inventory Count (OTA_HotelInvCountRQ) API provides the ability to request all room counts by room type and date.