According to the Lenovo Security Policy, OSD(LST) account password should be changed at least once every 90 days. Your password will expire in 15 days. If you do not change the password, your account will be locked.
To change your password, there are 2 options available:
Option 2: If you are a Lenovo Smart Tool user, you can change the password by Lenovo Smart Tool.
If there are any questions, please contact smarttool@lenovo.com