# OnError

The `OnError` parameter specifies the name of a handler for the error event of an asynchronous action. The `OnError` event is called if an asynchronous action fails and cannot continue.

The name that you specify must represent a section in the configuration file that contains the LibraryName parameter and any other settings for the event handler. For example:

    [ActionName]
    OnError=MyHandler

    [MyHandler]
    LibraryName=HttpHandler
    Url=http://localhost/dosomething?

Type: | String
Default: |
Required: | No
Configuration Section: | ActionName or Actions where ActionName is the name of an asynchronous action.
Example: | `OnError=EventHandler`
See Also: | OnStart OnFinish OnErrorReport

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