OptionaladditionalAdditional information about the shipment.
Values here are usually optional, but may be required depending on the carrier, service, and extras.
Optionalcarrier_Information required by the specified carrier
Optionaloverride_A list of services you want to rate the shipment with,
overriding the services passed to getDomesticRate's services parameter.
The package to be rated
Optionalrequest_Optional id that will be echoed in BulkDomesticRateResponse.request_id to help matching rates to requests
Information about a shipment to be rated