# UltracartClient::FulfillmentInventory ## Properties | Name | Type | Description | Notes | | ---- | ---- | ----------- | ----- | | **item_id** | **String** | | [optional] | | **quantity** | **Float** | | [optional] | ## Example ```ruby require 'ultracart_api' instance = UltracartClient::FulfillmentInventory.new( item_id: null, quantity: null ) ```