“The member with identity ‘Result’ does not exist in the metadata collection.
Parameter name: identity”
If you have stumbled across this error when trying to perform a transaction against your DB or any other action via your entity layer. If it is indeed a Microsoft SQL Database or any other database I would highly recommend you disable triggers on the affected tables and re run your test.
This error is the entity layer running home to its default error when either the error cannot be translated or the what ever is being returned from the transaction cannot be understood.
So if you stumble across this error, its because the entity layer is performing an operation that is causing a secondary separate operation which is where the underlying error is kicking back from, either because an error was raised or because the return is in an unexpected format.