Magento Version: 22.214.171.124
I created multi-websites and stores into my client's Magento website as per following :
Website 1: australia.com
This website has 3 stores as per following :
Store 1: AU
Store 2: CN
Store 3: US
Website 2: china.com
This website has 1 store as per following :
Store 1: CN
And as per default Magento functionality, If I add a new product from admin into all above mention stores than qty should be same for that product in all stores.
And currently, qty field scope is showing [Global] into manage product.
so as per my client requirement, can I able to change qty field scope "[GLOBAL]" to "[WEBSITE or STORE VIEW]" like as able to do in product "price" field?
For more information please check screenshot attached here
Upto Native Magento version 1.x and Magento 2.2.2, They doesn't provide any functionality for store/website wise stock management. Stock Management handle by globally.
Its possible but you need to do a customization for it or need to purchase 3-rd party extension to fulfill your criteria.
You can refer below link, Those are gives multiple choice among extension which will match your requirements.