# Lookup

Learn more about this Action in [this article](/the-workspace/pipelines/actions/enrichment/lookup.md).

<details>

<summary>v0.1.2</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">05/06/2025</mark>

The Action now validates if the lookup key columns match the type of their corresponding event fields.

</details>

<details>

<summary>v0.1.1</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">02/08/2025</mark>

If an event field is empty, the event no longer goes through the `error` port of the Action. Now, the output fields are filled with the default values.

</details>

<details>

<summary>v0.1.0</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">07/08/2024</mark>

Minor bug fixing

</details>

<details>

<summary>v0.0.1</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">06/18/2024</mark>

Initial version

</details>


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.onum.com/actions/lookup.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.