Diagnosis
In the structure maintenance, a subnode was to be inserted for a nodeor selected nodes reassigned as subnodes.
The selected node refers to a different structure or to part of adifferent structure. No subnodes can therefore be added to this node.

System Response
The system does not insert the subnode or reassign the selected nodes.

Procedure
Insert the new node at the same level or below another node, orreassign the selected nodes at the same level or below another node.