If your function throws an error, execution halts immediately. Segment captures the event, any outgoing requests/responses, any logs the function might have printed, as well as the error itself.

Segment then displays the captured error information in the[Event Delivery](/docs/connections/event-delivery/) page for yourfunction. You can use this information to find and fix unexpected errors.

Segment then displays the captured error information in the[Event Delivery](/docs/connections/event-delivery/) page for yourdestination. You can use this information to find and fix unexpected errors.

You can throw[an error or a custom error](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error){:target="_blank"} and you can also add helpful context in logs using the[`console` API](https://developer.mozilla.org/en-US/docs/Web/API/console){:target="_blank"}. For example:

asyncfunctiononBatch(events,settings){

return events

}

}

})

returnPromise.all(promises)

try {

constresults=awaitPromise.all(promises);

constbatchResult= [].concat(...results);// Combine arrays into a single array

return batchResult;

}catch (error) {

thrownewRetryError(error.message);

}

}

asyncfunctiononTrackBatch(events,settings) {

return events

}

asyncfunctiononIdentifyBatch(events,settings) {

return events

}