The object could not be added to the EntityCollection or EntityReference. An object that is attached to an ObjectContext cannot be added to an EntityCollection or EntityReference that is not associated with a source object.
The object cannot be attached because it is already in the object context. An object can only be reattached when it is in ...
The object cannot be attached because the value of a property that is a part of the EntityKey does not match the corresponding ...
The object could not be added or attached because its EntityReference has an EntityKey property value that does not match ...
The object could not be added to the bound collection. The specific EntitySet for the object of type '{0}' could not be determined. ...
The object could not be added to the EntityCollection or EntityReference. An object that is attached to an ObjectContext ...
The object could not be removed from the EntityCollection or EntityReference. An object that is attached to an ObjectContext ...
The object graph contains multiple references to an instance of type '{0}' and the serializer cannot find a commonly visible ...
The object in the '{0}' role cannot be automatically added to the context because it was retrieved using the NoTracking merge ...
The object in the ObjectContext is of type '{0}', but the modified object provided is of type '{1}'. The two objects must ...