---
type: object
properties:
  item_id:
    type:
      - integer
      - "null"
    description: Internal item identifier
  external_id:
    type:
      - string
      - "null"
    description: Item barcode
  force_checkin:
    type:
      - boolean
      - "null"
  ignore_holds:
    type:
      - boolean
      - "null"
additionalProperties: false