Source: GroupWise engine.
Explanation: Groups are nested too deep.
Possible Cause: The distribution list contains groups that are nested more than five levels deep or it might contain a circular reference. For example, if a personal group contains a recipient with the same name as the personal group, a circular reference is created.
Action: Edit the groups to remove the circular reference, or include the contents of one of the sub-groups in a higher level group to reduce the levels in the structure.