# 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="/files/yL3lPwHTUFgeSd5WrEac" alt=""><figcaption></figcaption></figure>

***

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