SAP Message UGMD505 - Node &1 has an ambiguous substructure - see long text

Diagnosis
When reading the hierarchy structure from the remote storage (BW or ERP)the system encountered the following error:
Node &v1& appears repeatedly and has variously assigned subnodes
.
The following found locations are problematic: hierarchies &v2&, &v3&,hierarchy version &v4&

System Response
When reading the hierarchy, there is overlapping of the subnodes for allfound locations.
In the result, allsubnodes found are uniformly assigned to nodeV1.
The display of the hierarchy in the application differs from what isexpected.

Procedure
You can either standardize the hierarchies concerned, or limit thereading to a single hierarchy.