docs/data/reusables/codespaces/emus-create-codespaces.md

If you have a {% data variables.enterprise.prodname_managed_user %}, you cannot create codespaces for your personal repositories, unless the repository is a fork of an organization-owned repository and you are allowed to use {% data variables.product.prodname_github_codespaces %} at the organization's expense. For more information, see "AUTOTITLE."