To activate PES 2011 manually, you typically need two distinct pieces of information that the game uses to generate a final "Unlock Code":

Find the code from your original purchase receipt or game manual.

In the past, players would enter both the Serial and Request Code into an official web portal to receive a final Unlock Code .

If you have a valid proof of purchase but a blocked serial, some third-party retailers like Gamesplanet historically provided updated codes via their support channels.

Paste the resulting Unlock Code back into the game’s activation window to finish the installation. Common Issues and Legacy Solutions

This is a 20-character alphanumeric string (e.g., XXXXX-XXXXX-XXXXX-XXXXX ). Historically, this was printed on the back of the physical game manual.

If your internet connection fails to verify the game automatically, you must follow the manual activation steps once used by official support sites like SecuROM :

This code is dynamic. Every time you open the manual activation window, a new Request Code may be generated. How to Perform Manual Activation

Are you having trouble the Request Code in the installation menu, or is the Unlock Code you generated not being accepted? Manual Unlockcode generation - SecuROM Support