CMMVC9378E The command failed because the specified ownership group is associated with one or more objects. To continue specify -keepobjects.

Explanation
This error can occur if an attempt is made to delete an ownership group that is still associated
with objects.

User response
Complete one of the following steps:
To remove the ownership group without removing the associated objects from the system, retry the
command and specify the -keepobjects option.

Change or delete the ownership group for all associated objects, and then retry the
command.