farm-2.x-dev/modules/asset/land/config/schema/farm_land.schema.yml

# Schema for land_type config entity.
farm_land.land_type.*:
  type: config_entity
  label: 'Land type'
  mapping:
    id:
      type: string
      label: 'ID'
    label:
      type: label
      label: 'Label'