Due to retirement, Sales and Marketing Pro (v. 11) and Business Plan Pro (v. 12) software can no longer be activated even if you have a valid serial key.
https://help.paloalto.com/hc/en-us/articles/360060808452-End-of-support-for-Business-Plan-Pro
https://help.paloalto.com/hc/en-us/articles/360061620351-End-of-support-for-Sales-and-Marketing-Pro
These software versions are quite old, but they still have some useful features. Therefore, to solve this problem, I have written the following activator. Please note that this is not a crack, and you still need to have a valid serial key to use it.
By choosing the option to activate by phone and entering the required codes into the software, it will provide you with the activation code you need.