ATKGRP015E: An error occurred while trying to add members to the existing group.
Explanation: Either the selected group or target resources could not be found, or some other error occurred.
Operator Response: Verify the selected group and target resources exist, and try the request again
For more information, see the file error-log-0.html and search for "AddToExistingGroupUITask". The default location of the log files depends on the operating system that is running on the management console. The following list provides the default location associated with each operating system.
If the problem persists, contact Support.