Documentation : Available Methods ( Free Service )
Method - tracking
This method is to be used when you want to know exactly where the package is and where it is in the timeline. It's the same information if you were to go to UPS.com and provide the tracking ID. It will return important information about the package but also give a timeline of where the package is.
Method - rates
This method will provide available shipping methods and rates available for each method. The rates are directly from UPS and rely on weight and size of the package along with destination and origin address information.