The `delete_entries` processor deletes entries, such as key-value pairs, from an event. You can define the keys you want to delete in the `with-keys` field following `delete_entries` in the YAML configuration file. Those keys and their values are deleted.
Next, create a log file named `logs_json.log` and replace the `path` in the file source of your `pipeline.yaml` file with that filepath. For more information, see [Configuring Data Prepper]({{site.url}}{{site.baseurl}}/data-prepper/getting-started/#2-configuring-data-prepper).
For example, before you run the `delete_entries` processor, if the `logs_json.log` file contains the following event record:
```json
{"message": "hello", "message2": "goodbye"}
```
When you run the `delete_entries` processor, it parses the message into the following output:
```json
{"message2": "goodbye"}
```
> If `message` does not exist in the event, then no action occurs.