feedback-3.x-dev/config/schema/feedback_message_type.schema.yml

feedback.feedback_message_type.*:
  type: config_entity
  label: 'Feedback message type config'
  mapping:
    id:
      type: string
      label: 'ID'
    label:
      type: label
      label: 'Label'
    success_message:
      type: label
      label: 'Success message'
    uuid:
      type: string