- title: "Changing an instance (shared) runner to a project (specific) runner"
  announcement_milestone: "14.5"  # The milestone when this feature was first announced as deprecated.
  announcement_date: "2021-11-22"
  removal_milestone: "15.0"  # the milestone when this feature is planned to be removed
  removal_date: "2022-05-22"  # the date of the milestone release when this feature is planned to be removed
  breaking_change: true
  body: |  # Do not modify this line, instead modify the lines below.
    In GitLab 15.0, you can no longer change an instance (shared) runner to a project (specific) runner.

    Users often accidentally change instance runners to project runners, and they're unable to change them back. GitLab does not allow you to change a project runner to a shared runner because of the security implications. A runner meant for one project could be set to run jobs for an entire instance.

    Administrators who need to add runners for multiple projects can register a runner for one project, then go to the Admin view and choose additional projects.

  stage: Verify
  tiers: [Core, Premium, Ultimate]
  issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/345347