| BasicPropertyInfo | Property Information for the Room Stay. |
| BookingRules | Provides booking rule information for the room stay.A collection of BookingRule. |
| CancelPenalties | A collection of Cancellation Penalties objects for the Room Stay.A collection of CancelPenalty. |
| Comments | A collection of Comment objects. Comments which apply to the whole Reservation or a particular Room Stay or Service. A collection of comments. |
| DepositPayments | A collection of deposit and/or payments for the Room Stay.A collection of required payments. |
| Discount | Discount percentage and/or Amount, code and textual reason for discount.Identifies and provides details about the discount. |
 Guarantee | The guarantee information associated to the Room Stay. A maximum of 5 occurances are available for use depending on the context.The guarantee information to hold a reservation |
| GuestCounts | A collection of Guest Counts associated with Room Stay. A child Guest Count element is required for each distinct age group.A collection of GuestCount by age group. |
| MapURL | When requested, a link to a map is returned in the response which indicates the position of the matching hotel(s). |
| Memberships | A collection of Membership objects. Memberships provides a list of reward programs which may be credited with points accrued from the guest's activity.A collection of Membership objects. Memberships provides a list of reward programs which may be credited with points accrued from the guest's activity. Which memberships are to be applied to which part is determined by each object's SelectedMembershipRPHs collection. |
| RatePlans | A collection of Rate Plans associated with a particular Room Stay. |
| Reference | Information identifying an earlier availability quote. |
| ResGuestRPHs | A collection of unsigned integers serving as reference placeholders, and used as an index identifying which guests occupy this roomA collection of unsigned integers serving as reference placeholders, and used as an index identifying which guests occupy this room |
| RoomRates | A collection of Room Rates associated with a particular Room Stay. Each Room Rate combination can have multiple rates. Example King room, Rack rate plan, Monday through Thursday, weekday amount, Friday and Saturday, weekend amount. |
| RoomTypes | A collection of Room Types associated with a particular Room Stay. |
| ServiceRPHs | A collection of unsigned integers that reference the RPH (Reference Place holder) attribute in the Service object. The ServiceRPH attribute in the Service object is an indexing attribute that identifies the services attached to a specific guest or to the reservation.A collection of unsigned integers that reference the RPH (Reference Place holder) attribute in the Service object. The ServiceRPH attribute in the Service object is an indexing attribute that identifies the services attached to a specific guest or to the reservation. |
| SpecialRequests | The SpecialRequest object indicates special requests for the whole Reservation, or a particular Room Stay or Service.A collection of SpecialRequest objects. The collection of all special requests associated with any part of the reservation (the reservation in its entirety, one or more guests, or one or more room stays). Which special requests belong to which part is determined by each object's SpecialRequestRPHs collection. |
| TimeSpan | The Time Span which covers the Room Stay.Used to specify a time window range by either specifying an earliest and latest date for the start date and end date or by giving a date with a time period that can be applied before and/or after the start date. |
| Total | The total amount charged for the Room Stay including additional occupant amounts and fees. If TaxInclusive is set to True, then taxes are included in the total amount.The total amount charged for the service including additional amounts and fees. |
| TPA_Extensions | A placeholder in the schema to allow for additional elements and attributes to be included per Trading Partner Agreement (TPA).Allows extensions to be added to the OpenTravel specification per trading partner agreement. |
| DiscountCode | A discount code known to the hotel. |
| IndexNumber | A unique number (e.g. segment number or index number) used to further identify a booked item within a list of booked items. |
| MarketCode | The code that relates to the market being sold to (e.g., the corporate market, packages). |
| RoomStayGroupID | An ID of a group of rooms which must be booked together. |
| RoomStayLanguage | Language of the response for the RoomStay (property). Note that the requested language may not be available for all properties and so the language of the response for each property may vary. |
| RoomStayStatus | Identifies the status of the room stay.A union between TransactionActionType and PMS_ResStatusType. Used in messages that communicate between reservation systems as well as between a reservation and property management system. In addition to the TransactionActionType and PMS_ResStatusType, the UpperCaseAlphaLength1to2 may be used for company specific codes. |
| SourceOfBusiness | To specify where the business came from e.g. radio, newspaper ad, etc. |
| WarningRPH | This references the RPH found in the Warning element. Used to identify the warnings associated with this RoomStay. |
| PromotionCode | Promotion code is the identifier used by the host to link directly with a specific named advertising campaign. By including the required code, the client is able to gain access to special offers which may have been created for a specifically targeted group via a CRM system or for a wider advertising campaign using Television or press adverts. |
| PromotionVendorCode | List of the vendor codes associated with a promotion. |