If you are using a company workstation, the serial number may be managed by your IT or engineering department via a multi-user license. Best Practices for License Management Secure Documentation:

If you purchased a physical copy, look for a sticker on the back of the CD case or inside the manual. Digital License:

The serial number (often found on the product packaging or your digital purchase receipt) is required during the installation process to verify that you are a licensed user. Control FPWIN GR7 is specifically designed for the FP7 series PLCs

To ensure software stability and security, only use serial numbers provided through official Panasonic Industry channels or certified vendors. Registration: Registering your software on the Panasonic Download Center