Koha-clms/api/v1/swagger/parameters/checkout.json

{
  "checkout_id_pp": {
    "name": "checkout_id",
    "in": "path",
    "description": "Internal checkout identifier",
    "required": true,
    "type": "integer"
  },
  "seen_pp": {
    "name": "seen",
    "in": "query",
    "description": "Item was seen flag",
    "required": false,
    "type": "integer"
  }
}