## Documentation Index

Access the complete documentation index at:
https://www.zoho.com/en-fr/books/kb/llms.txt

Use this file to discover all available documentation pages before proceeding.

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# How do I add data to a project level custom field in Zoho Books?

If you have created a [custom field for the projects module](https://www.zoho.com/books/help/projects/preference.html#field-cust) in Zoho Books, but that custom field is not present in Zoho Projects, you can follow these steps to add data to the custom field:

*   Navigate to the **Projects** module under _Time Tracking_ from the left side bar.
*   Bulk select the desired projects.
*   Click the **Bulk Update** option.
*   Choose the custom field you created.
*   Enter the corresponding value for the custom field.
*   Click **Save** to update changes made.

On the contrary, if the custom field is already available in Zoho Projects and you have mapped the same with Zoho Book custom field from the integration page, the data will be synced automatically.

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