Discovery data generated by discovery source id '%1' has invalid topology relationships. This can be due to the following ...

Discovery data generated by discovery source id '%1' has invalid topology relationships. This can be due to the following reasons:
 -- More than one discovery data item describes relationships for the same health service id. -- The discovery data contained entity instances; only relationships should be generated. -- The relationships were not agent communication relationship types. -- The source entity instance id specifies a singleton type. 
No existing topology relationships were changed.