Check the notification settings for revocations. It may be set to CC the manager instead of the certifier. Are there any rules defined in these settings ?
Similar to CC settings, reminder notifications might be configured to go to the entitlement owner’s line manager. Review the reminder notification settings and adjust them.
Set some debug loggers to see what values are there for notification settings.
@rohit_jaiswal1
Can you share your certification definition xml, this should help to identify this and also any phase change rule if have custom notifications also needs to be checked