---
type: Major breaking change
scope:
  - ckeditor5-editor-multi-root
see:
  - https://github.com/ckeditor/ckeditor5/issues/19885
---

The `config.rootsAttributes` and `config.lazyRoots` multi-root editor config options have been removed.
The `config.roots` option should be used instead to define the editor roots and their attributes.

The `config.roots.<rootName>.modelAttributes` property should be used to define the attributes of a root, while
the `config.roots.<rootName>.lazyLoad` property should be used to define whether a root should be lazy loaded or not.

Note that `config.roots.<rootName>.lazyLoad` property is now deprecated and will be removed in the future.
