Pricing & Room Inventory (ARI) XML Reference

Availability, Rates, and Inventory (ARI) is a Google Hotel Ads pricing feed that uses property data, room availability, and rate plans to set pre-defined pricing strategies for properties.

ARI uses up to six different request message types:

• Transaction (Property Data). Defines rooms, packages (combinations of booking features such as refundability and amenities), and their mapping.
• OTA_HotelRateAmountNotifRQ. Updates pricing for room rates.
• OTA_HotelAvailNotifRQ. Updates availability and restrictions for room rates. Inventory can also be updated using this message, but OTA_HotelInvCountNotifRQ is preferred.
• OTA_HotelInvCountNotifRQ. Updates inventory counts for rooms.
• TaxFeeInfo. (Optional) Defines per-property taxes and fees. This message isn't required if AmountAfterTax is specified in the OTA_HotelRateAmountNotifRQ message.
• Promotions. (Optional) Defines promotional rates for certain bookings, stays, and users.

Each message contains a subset of information that Google uses to compute the prices and availability displayed to users when they search for your properties with specific check-in and check-out dates and desired occupancy.

This XML reference guide provides detailed reference content and code examples for the different messages, elements, and attributes available for ARI feeds.

Note: ARI functionality is limited to the messages and elements described within this Inventory & Pricing (ARI) XML reference and the ARI Guide. Any OTA message, element, or attribute not specifically documented here is not supported in our ARI implementation. Also, other Transaction message elements not covered in this Inventory & Pricing (ARI) XML reference are not currently supported when using the ARI feed type.

We continue to update and improve our API. If you use additional pricing features in your system, please reach out to us so we can prioritize those features or let you know if they are already in progress.

ARI XML Reference revision history

The following table lists documentation updates for feature changes only.

Date	Changes
August 14, 2020	Initial release.
October 21, 2020	Added the Promotions message type.
November 17, 2020	For Transaction (Property Data) messages, updated the endpoint and added the action attribute to PropertyDataSet elements.
November 24, 2020	For Transaction (Property Data) messages, added the <AllowablePackageIDs> and <AllowableRoomIDs> elements.
February 4, 2021	Added response messages.
February 25, 2021	Added OTA_HotelInvCountNotifRQ.