SAP Message UGMD507 - Error while expanding ranges; see long text

Diagnosis
While reading the structure of hierarchy &v1& of characteristic &v2&from RFC destination '&v3& ', the system has discovered that thehierarchy contains ranges.
The following error occurred while breaking down the ranges into singlevalues:
V4

System Response
The system will continue reading the hierarchy, if possible. You canexpect that hierarchy &v1& will not be completely read.

Procedure
Try to find and correct the cause of the error. Then repeat the action.If the error persists, contact SAP.