# Error: invalid_event_types

> Unknown event types

Source: https://docs.vlayers.ai/errors/invalid_event_types

- HTTP status: 400
- Retry: No: fix the request first
- details: `unknown`: the types not recognised.

## What happened

Unknown event types.

## Why

`types` names an event type that does not exist, or a `<prefix>.*` wildcard that matches none.

## How to fix it

Use the event types the reference lists (for example `message.*`, `conversation.created`).

## Example response

```json
{
  "error": "invalid_event_types",
  "message": "Unknown event types."
}
```