# Enhancements to CMS fields and site configuration

> Discover the latest enhancements to Webflow's APIs

The Data API now supports creating reference fields and creating multiple fields during collection creation.

* **[Create reference fields](/data/reference/cms/collection-fields/create)**<br />
  To create a reference field, choose `MultiReference` or `Reference` as the `type` property in the `field` object. Additionally, include the `metadata` property to specify the `collectionId` of the collection that the reference field will point to. You can create a reference field during collection creation using the [create collection](/data/reference/cms/collections/create) endpoint or by updating an existing collection using the [create collection field](/data/reference/cms/collection-fields/create) endpoint.
* **[Create fields during collection creation](/data/reference/cms/collections/create)**<br />
  You can now create multiple fields during collection creation using the [create collection](/data/reference/cms/collections/create) endpoint. Collections are limited to 60 fields per collection.

## Add and manage `robots.txt`

* **[Configure `robots.txt`](/data/reference/enterprise/site-configuration/robots-txt/get).** <br />
  Use the following endpoints to get and update your `robots.txt` file:
  * [Get `robots.txt`](/data/reference/enterprise/site-configuration/robots-txt/get)
  * [Replace `robots.txt`](/data/reference/enterprise/site-configuration/robots-txt/put)
  * [Update `robots.txt`](/data/reference/enterprise/site-configuration/robots-txt/patch)
  * [Delete `robots.txt`](/data/reference/enterprise/site-configuration/robots-txt/delete)