bm-1.0.x-dev/config/schema/bm.entity_type.schema.yml

bm.bm_type.*:
  type: config_entity
  label: 'Booking Manager type config'
  mapping:
    id:
      type: string
      label: 'ID'
    label:
      type: label
      label: 'Label'
    uuid:
      type: string