SAP Message RSO018 - InfoObject &1: InfoObject &2 is included as an ext. hierarchy charstic.

Diagnosis The SAP version of InfoObject &V1& has the external hierarchy attributeV2. in your revised customer version, infoobject v2 is not anexternal hierarchy characteristic of InfoObject &V1&. System Response InfoObject &V2& is added as an external hierarchy characteristic of &V1& when matching.