Entering a serial number
Enter the serial number for the software you purchased in the serialization screen. The serialization screen will load the first time you launch the application (if using the Adobe Flash Builder 4.7 Eclipse Plugin, it may take more than one launch for the serialization screen to appear).
If you are installing as an upgrade, the installer will check your system to find the valid upgrade product. If it cannot find it, it will ask you to input the serial number of the product being upgraded.
Only applications running as a trial will recognize the new serial number. If any of the applications have already been serialized with a different serial number, it will continue to use that serial number until you remove the older serial number using the Help > Deactivate Flash Builder. Then on the next launch of the application, it will validate Adobe ID and further launch will recognize the new serial number.
Volume licensing customers cannot purchase from a trial directly. Please contact your reseller or authorized Adobe licensing center to place an order for a volume license. To find a reseller in your area, go to http://partners.adobe.com/resellerfinder/na/reseller.jsp.