| AdjustmentDetails | Collection of adjustments. |
| ConfID | A confirmation number by which this reservation can be uniquely identified. In some cases the ConfID may be used in lieu of a ContractID, dependent on business needs.An identifier used to uniquely reference an object in a system (e.g. an airline reservation reference, customer profile reference, booking confirmation number, or a reference to a previous availability quote). |
| ContractID | A contract number by which this rental can be uniquely identified.An identifier used to uniquely reference an object in a system (e.g. an airline reservation reference, customer profile reference, booking confirmation number, or a reference to a previous availability quote). |
| Customer | Details regarding the customer.Information on the one primary driver and, optionally, several additional drivers. This may be used to provide a frequent renter number. |
 Errors | A collection of errors that occurred during the processing of a message.A collection of errors that occurred during the processing of a message. |
| ExchangeLocationDetails | Provides location details where the vehicle was exchanged. |
| ExchangeReason | Used to indicate reasons for vehicle exchange.An indication of a new paragraph for a sub-section of a formatted text message. |
| Fees | A collection of fees associated with this rental. |
| PickUpReturnDetails | Typically this is used to provide the actual return date, time, and location.The VehicleRentalCoreType complex type identifies the data that is common, or core, to almost every transaction associated with the rental of a vehicle. |
| PricedCoverages | A collection of coverages associated with this vehicle. |
| Remarks | A collection of remarks. |
| RentalRate | This describes time, mileage and other charges for a specific rental agreement.This describes time, mileage and other charges. |
| Success | Returning an empty element of this type indicates the successful processing of an OpenTravel message. This is used in conjunction with the Warning Type to report any warnings or business errors.Returning an empty element of this type indicates the successful processing of an OpenTravel message. This is used in conjunction with the Warning Type to report any warnings or business errors. |
| TotalCharge | |
 Vehicle | Vehicle info including size, class, make/model, vehicle asset number, etc. This is the actual vehicle being returned and the actual vehicle being given to the customer in exchange. This provides the ability to display multiple exchanges within this rental agreement. |
| Warnings | Collection of warnings.Collection of warnings. |
| AltLangID | The alternate language for a customer or message encoded as ISO 639-3. |
| CorrelationID | Allows end-to-end correlation of log messages with the corresponding Web service message throughout the processing of the Web service message. |
| EchoToken | A reference for additional message identification, assigned by the requesting host system. |
| PrimaryLangID | The primary language preference for the message encoded as ISO 639-3. |
| RetransmissionIndicator | When true, indicates the message is being re-sent after a failure. |
| SequenceNmbr | The sequence number of the transaction assigned by the sending system for ordered message processing or message resynchronization. |
| Target | Test or Production target system indicator. |
| TargetName | The name of the Test or Production system. |
| TimeStamp | ISO 8601 encoded timestamp indicating the creation date and time of the message. |
| TransactionIdentifier | Unique identifier to relate all messages within a transaction (e.g. this would be sent in all request and response messages that are part of an on-going transaction). |
| TransactionStatusCode | This indicates where this message falls within a sequence of messages. |
| Version | The OpenTravel message version indicated by a decimal value. |
| RentalActionCode | Identifies the reason for the transaction. To specify the type of action requested when more than one function could be handled by the message. |
| RentalAgreementStatusCode | This is a code that represents the status of the rental agreement. Refer to the enumerated list and annotations for additional information. |