Installazione e aggiornamento > Upgrade Guide > Before Upgrading > Installing Additional PTC Products > Upgrading with Windchill Requirements Management
  
Upgrading with Windchill Requirements Management
If you are upgrading your Windchill solution (Windchill PDMLink) that also includes Windchill Requirements Management, there are instructions in the Windchill Help Center to read, understand, and follow under Windchill Requirements Management before beginning the upgrade process.
Pay particular attention to necessary WinDU/WinRU tasks and command scripts.