> For the complete documentation index, see [llms.txt](https://developer.paddle.com/llms.txt).

# Simulation run events

Notification simulation run events describe a simulated event that happened as part of a notification simulation run.

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When you run a notification simulation using [webhook simulator](https://developer.paddle.com/webhooks/test-webhooks.md), Paddle sends simulated events to the notification destination set against the simulation and records information about the delivery attempt.

Notification simulation run events hold information like:

- What kind of event was simulated.
- Whether the event was delivered successfully.
- When Paddle attempted to deliver it.
- The payload of the simulated event.
- The response from the destination server.

For scenario simulations, Paddle sends multiple events for each step of the scenario, like all the events that occur when a subscription is created.