StockStateProvider

What it does

This class manages inventory stock state validation and calculations for products in Magento 2.

Developers use it to verify stock availability, check quantity constraints (min/max sale qty, qty increments), validate quote items against inventory rules, and determine if products can be backordered.

It's the core provider for all stock-related validations during cart and checkout operations.

Public Methods

• verifyStock()
• verifyNotification()
• checkQuoteItemQty()
• checkQty()
• suggestQty()
• checkQtyIncrements()
• getStockQty()