> For the complete documentation index, see [llms.txt](https://docs.ovaledge.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ovaledge.com/release8.1/advanced-tools/lineage-maintenance/how-to-add-column-mapping.md).

# How to Add Column Mapping

The application allows users to map columns manually. 

* Navigate to **Advanced Tools > Lineage Maintenance** and select the Object type, Connector Name, Schema, and Table.
* It displays the list of source and destination lineage objects.
* Users can click the **edit** icon in the "**Columns**" field.

  <figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXcZcozeU-7nMCNKOoyGw8yhoeqcmeZK2zpOkk_p5Qw9w-x4N2F8R2sNI3vQ2C0rSjnSucMARNTUw9rTt8dM-qk2Cl9QcJQPWKSx7H7jAJgvudyOWK4Ymh97S3p8kRyVR356iISUqQ?key=7S-lJ1VvBGLuUwv5Bk6M8zbE" alt=""><figcaption></figcaption></figure>
* A new window appears, where users can add new rows based on the requirement.&#x20;
* Users can select the Source Column Name and Target Column Name from the dropdown list and specify comments as needed.<br>

  <figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXfZYmdYOJf4bIL8VDfMQNpDh14GlJg2p1XmaFIBoiR5jGOfoOl6EZwjXfMKRFk0GWDyg9Ka_W5VpAF0xZEZ1VcLdpz8Gx39QwgDbCWozMHyYjKh8zzoUc3uavpbUFeC8gw2e4kA?key=7S-lJ1VvBGLuUwv5Bk6M8zbE" alt=""><figcaption></figcaption></figure>
* Users can map columns using the “**Map column via AI**” option. This automatically fills in the suggested source and target columns, which users can adjust or delete as required.&#x20;

  <figure><img src="https://content.gitbook.com/content/FZv5WsZmBfXjiJfMU2zR/blobs/4X27Mn0MlgIgoKKJv4wY/image.png" alt=""><figcaption></figcaption></figure>

***

Copyright © 2025, OvalEdge LLC, Peachtree Corners, GA, USA.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

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

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.ovaledge.com/release8.1/advanced-tools/lineage-maintenance/how-to-add-column-mapping.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

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.