Saleor Core

Backend behavior reference derived from the Saleor core source code. Covers internal mechanics that aren't fully documented in the public API reference — discount precedence, stock availability modes, denormalized fields, and known Dashboard gotchas.

When to Apply

• Building or debugging discount/promotion UI in the Dashboard
• Investigating why a voucher or promotion isn't applying
• Understanding order-level vs line-level discount precedence
• Working with OrderDiscount / OrderLineDiscount objects
• Debugging unit_discount_value on OrderLine
• Deciding whether discounts stack or suppress each other
• Working on stock availability, shipping zones, warehouses, or Shop.useLegacyShippingZoneStockAvailability
• Debugging why PRODUCT_VARIANT_*_IN_CHANNEL webhooks aren't firing
• Building diagnostic / "doctor" tooling that explains availability problems
• Auditing Dashboard copy that uses "available" / "in stock" / "purchasable"