| BasicInfo | Core information about the booked tour and/or activity, including ID(s) and name. |
| Description | Descriptive information about the tour/activity. |
 Discount | Promotion code and discount program information that may be associated with an individual participant, a participant category and/or a group. |
| Location | The tour/ activity location.Location information for the tour and/or activity. |
| ParticipantInfo | Individual participant, participant category and group details. |
| PaymentInfo | Payment details that may be associated with an individual participant, a participant category and/or a group. |
| Policy | Policy(s) associated with the tour and/or activity. |
| Pricing | Pricing information for the tour/ activity that may be broken down by participant category and/or a group. |
| SupplierOperator | Information about the supplier/ operator of the tour/ activity.Supplier and/or operator information, including address and contact details. |
| 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. |