SAP Message R7549 - InfoObject &1 is referenced by &2, therefore it cannot reference further

Diagnosis
InfoObject &V1& is referenced by InfoObject &V2&. InfoObject &V1&should, however, reference InfoObject &V3&. This is not possible.

System Response
InfoObject &V1& cannot be saved or activated.

Procedure
Before you can change InfoObject &V1&, so that it references anotherInfoObject, no other InfoObjects that reference InfoObject &V1& areallowed to exist.