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vikas malik Does anyone can confirm if it is possible to create a trigger for "__History" objects
I have to create a trigger that creates a task after an e-mail is sent from Activity History in a custom object. I am trying to use MyCustomObject__History but I'm getting the following error: SObject type does not allow triggers: MyCustomObject__History
No you can't, the x__history objects are the field history tracking objects. But you can write triggers on the Activity object, which I think you're looking fo