The identifying information of the entity (i.e., the instance) generating the error. If this entity is modeled in the CIM ...

The identifying information of the entity (i.e., the instance) generating the error. If this entity is modeled in the CIM Schema, this property contains the path of the instance encoded as a string parameter. If not modeled, the property contains some identifying string that names the entity that generated the error. The path or identifying string is formatted per the ErrorSourceFormat property.