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When performing certain operations (modify, create, delete), errors occur indicating that the edit operation is failing.
When developing class extensions that implement IObjectClassEvents methods on Geodatabase object classes in C++, the methods for OnCreate, OnChange and OnDelete must return successfully. If they do not, the error they return will be chained to the calling application (ArcMap) and the edit operation is aborted.
The methods on IObjectClassEvents that are not implemented should return success.