{
  "type": "object",
  "properties": {
    "checkout_id": {
      "type": "integer",
      "description": "internally assigned checkout identifier"
    },
    "patron_id": {
      "$ref": "../x-primitives.json#/patron_id"
    },
    "item_id": {
      "type": "integer",
      "description": "internal identifier of checked out item"
    },
    "due_date": {
      "type": "string",
      "format": "date-time",
      "description": "Due date"
    },
    "library_id": {
      "type": ["string", "null"],
      "description": "code of the library the item was checked out"
    },
    "issuer_id": {
      "type": [ "integer", "null" ],
      "description": "internally assigned for the user that processed the checkout"
    },
    "checkin_date": {
      "type": ["string", "null"],
      "format": "date-time",
      "description": "Date the item was returned"
    },
    "last_renewed_date": {
      "type": ["string", "null"],
      "format": "date-time",
      "description": "Date the item was last renewed"
    },
    "renewals": {
      "type": ["integer", "null"],
      "description": "Number of renewals"
    },
    "unseen_renewals": {
      "type": ["integer", "null"],
      "description": "Number of consecutive unseen renewals"
    },
    "auto_renew": {
      "type": "boolean",
      "description": "Auto renewal"
    },
    "auto_renew_error": {
      "type": ["string", "null"],
      "description": "Auto renewal error"
    },
    "timestamp": {
      "type": "string",
      "description": "Last update time"
    },
    "checkout_date": {
      "type": "string",
      "format": "date-time",
      "description": "Date the item was issued"
    },
    "onsite_checkout": {
      "type": "boolean",
      "description": "On site checkout"
    },
    "note": {
      "type": ["string", "null"],
      "description": "Issue note text"
    },
    "note_date": {
      "type": ["string", "null"],
      "format": "date",
      "description": "Datetime of the issue note"
    },
    "note_seen": {
      "type": ["boolean", "null"],
      "description": "has the note been seen already"
    },
    "issuer": {
      "type": [
          "object",
          "null"
      ],
      "description": "The object representing the checkout issuer"
    }
  },
  "additionalProperties": false
}