ProvideTrackingInfoRequest ( BaseRequest )
Sellers use this call to provide new or verify existing tracking information for one package being shipped to the buyer. When a case involves multiple quantities of an item, hence multiple packages, this call must be made by the seller for each package being shipped to the buyer.
Call that uses ProvideTrackingInfoRequest:
The shipping carrier being used by the seller to ship the package.
See the Field Index to learn which calls use carrierUsed.
caseId ( CaseIdType ) 
This container is used to identify a specific Item Not Received or Significantly Not As Described case opened by a buyer in the eBay Resolution Center.
See the Field Index to learn which calls use caseId.
This optional field allows the seller to add a comment intended to be read by the buyer receiving the tracking information.
See the Field Index to learn which calls use comments.
The shipment tracking number. eBay checks to verify that the tracking number is consistent with the numbering scheme used by the specified shipping carrier, but eBay cannot verify that the tracking number is accurate. Accuracy is the responsibility of the seller.
See the Field Index to learn which calls use trackingNumber.