CRFCN0227E The source node can not be a child of the target node.
Explanation
When you drag an object within an object map, the object is
moved within the hierarchy that it is currently part of. Moving an object
to a higher level within its hierarchy is not permitted.
System action
The current operation stops.
User response
Do not move the object to a higher level within the hierarchy
that it is already a part of.