> For the complete documentation index, see [llms.txt](https://docs.rierino.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rierino.com/devops/api-event-and-process-flows/configuring-saga-steps/event-step/flow-actions/transform-event.md).

# Transform Event

## Transform Event Actions

### Transform

Applies the requested transformation on an event. Event metadata parameters applicable for this action are as follows:

{% tabs %}
{% tab title="Parameters (table)" %}

| Parameter    | Definition                                    | Example                                              | Default |
| ------------ | --------------------------------------------- | ---------------------------------------------------- | ------- |
| Class        | Fully qualified name of the transformer class | com.rierino.handler.transform.ReducePayloadTransform | -       |
| {% endtab %} |                                               |                                                      |         |

{% tab title="Parameters (JSON Schema)" %}

```json
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "eventMeta": {
      "type": "object",
      "properties": {
        "parameters": {
          "type": "object",
          "properties": {
            "class": {
              "type": "string",
              "description": "Fully qualified name of the transformer class",
              "examples": [
                "com.rierino.handler.transform.ReducePayloadTransform"
              ],
              "default": null
            }
          }
        }
      }
    }
  }
}
```

{% endtab %}
{% endtabs %}

{% hint style="info" %}
All transformer classes available in saga flows can be used with this handler, making it possible to distribute resource-consuming transformations to different runners.
{% endhint %}


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