---
type: object
properties:
  item_id:
    type: integer
    description: internally assigned item identifier
    readOnly: true
  item:
    description: item of the item
    type: 
    - string
    - "null"
  usage_data_provider_id:
    description: usage_data_provider the item is harvested by
    type: integer
  platform:
    description: name of the platform
    type: 
    - string
    - "null"
  publisher:
    description: publisher of the item data
    type:
    - string
    - "null"
  erm_usage_muses:
    type: array
    description: usage mus
    items:
      $ref: erm_usage_mus.yaml
  erm_usage_yuses:
    type: array
    description: usage yus
    items:
      $ref: erm_usage_yus.yaml

additionalProperties: false
required:
  - item
  - usage_data_provider_id
