/**
 * @schema AdminUpdateExchangeOutboundItem
 * type: object
 * description: The details to update in an outbound item.
 * x-schemaName: AdminUpdateExchangeOutboundItem
 * properties:
 *   quantity:
 *     type: number
 *     title: quantity
 *     description: The item's quantity.
 *   internal_note:
 *     type: string
 *     title: internal_note
 *     description: A note only viewed by admin users.
 * 
*/