No, the SPSS Trial Subscription does not use authorization codes, instead it uses your IBMid username and password to authenticate your license. After your trial has ended, the trial application will no longer work. It is advised that you uninstall the trial when it has expired.  If you wish to purchase a GradPack, you will need to install the GradPack software and apply the authorization code you received from the vendor who sold you the license. \r