> For the complete documentation index, see [llms.txt](https://docs.pentaho.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pentaho.com/pdia-data-integration/9.3-data-integration/pdi-transformation-steps-reference-overview/splunk-output/options-splunk-output/event-tab.md).

# Event tab

![Event tab, Splunk Output](/files/1NQASC7D5bCd19tHc10G)

In this tab, you can define the following event properties and options, as described in the table below.

| Option                  | Description                                                                                                                                                                                                                                                                                                                                                             |
| ----------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Index to write to**   | Specifies the Splunk index where the events are stored. Usually, this is the main index. Check your Splunk server for a list of available indices. This field can be a parameter with incoming fields (**?{\<Field>}**) or transformation parameters **(${Parameter}**).                                                                                                |
| **Host**                | Indicates the hostname of the original event host. If you want to gather data from a router and write it to Splunk, use the router's host name. This field can be a parameter with incoming fields (**?{\<Field>}**) or transformation parameters (**${Parameter}**).                                                                                                   |
| **Source type**         | Indicates the format type of the event data. The list of known source types appears [here](http://docs.splunk.com/Documentation/Splunk/5.0.2/Data/Listofpretrainedsourcetypes). To define a new format, follow [these instructions](http://docs.splunk.com/Documentation/Splunk/5.0.2/Knowledge/Createandmaintainsearch-timefieldextractionsthroughconfigurationfiles). |
| **Source**              | Indicates the source of the event data. See [Splunk documentation](http://docs.splunk.com/Splexicon:Sourcetype) for more details.                                                                                                                                                                                                                                       |
| **Custom Splunk event** | If checked, enables the Splunk Event Data option and allows you to customize the data coming into Splunk. This is useful if you want to write a different format than the default, which is name value pairs separated by newline characters.                                                                                                                           |
| **Splunk Event Data**   | Allows you to specify customized event text. This field can be a parameter with incoming fields (**?{\<Field>}**) or transformation parameters (**${Parameter}**).                                                                                                                                                                                                      |


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