The Change Discovery (OTA_HotelCacheChangeRQ) API is used to query SynXis CRS to identify rate and availability changes in SynXis CRS, so that the partner can send a targeted shop to SynXis to get the updated availability.

The Hotel Availability Request message provides the ability to search single or multiple properties for detailed availability and pricing information. The request is flexible allowing for multiple ways to search for hotels, filter the rates returned and specify the response type.

The Loyalty Enrollment(OTA_LoyaltyAccountCreateRQ) is used to allow SynXis to send enrollment information to a loyalty service provider to create a new account for one of its customers.

The Loyalty Points Redemption (OTA_LoyaltyCertificateRedemptionRQ)  is used to allow SynXis to communicate with a loyalty service provider to redeem certificates or points for their customers.

The Loyalty Point Retrieval(OTA_ReadRQ) is used to retrieve the Point Balance for a loyalty member.