We noticed a user with id -99 in cmn_sec_users. The user name for this user is ppm_invalid_user.
Should this account be present?
Release : 15.7.1, 15.8, 15.8.1
Component : CA PPM APPLICATION
Yes, this user will be present out of the box and is used for the application. It is not recommended to make any change to this account, as it's possible it could cause a negative effect in the environment.
Editing the user could cause upgrade to fail - https://knowledge.broadcom.com/external/article/103234/ca-ppm-upgrade-fails-if-ppm_invalid_user.html