Real-time stock synchronization across physical and online stores

**Purpose**

1.1. Ensure continuous, real-time synchronization of stock levels between brick-and-mortar stores and online storefronts for Adult DVD retailers.
1.2. Prevent overselling, stock discrepancies, and manual adjustment errors by reflecting inventory updates instantly after each sale or return.
1.3. Streamline multi-channel inventory for increased customer satisfaction, efficient operations, and reduced inventory holding costs.

**Trigger Conditions**

2.1. New sale is processed at the POS or online platform.
2.2. Product return is completed or initiated online or in-store.
2.3. Periodic scheduled stock reconciliation events (e.g., nightly jobs).
2.4. Manual inventory adjustments by staff or system imports.

**Platform Variants**

3.1. Shopify
• Feature/Setting: Admin API `inventoryLevel.adjust` — trigger, update location-based inventory after each order or return.
3.2. Square POS
• Feature/Setting: Inventory API `BatchChangeInventory` — post-transaction inventory change and synchronization events.
3.3. WooCommerce
• Feature/Setting: Webhooks `order.updated`, REST API `PUT /wp-json/wc/v3/products/{id}` for stock_quantity.
3.4. Lightspeed Retail
• Feature/Setting: API endpoint `/Product/InventoryCount` — adjust based on integration trigger.
3.5. Vend (now Lightspeed X-Series)
• Feature/Setting: Webhooks on `sale.created`, API `/api/2.0/products/{id}` PATCH for inventory mods.
3.6. BigCommerce
• Feature/Setting: Catalog API `PUT /stores/{store_hash}/v3/catalog/products/{product_id}` for inventory.
3.7. Magento
• Feature/Setting: REST API `PUT /V1/products/{sku}/stockItems/{itemId}` — adjust on order or admin update.
3.8. PrestaShop
• Feature/Setting: Webservice `stock_availables` resource, update on HTTP request.
3.9. Amazon Seller Central
• Feature/Setting: MWS Feeds API `_POST_INVENTORY_AVAILABILITY_DATA_` on quantity updates.
3.10. eBay
• Feature/Setting: Inventory API `updateInventoryItem`, triggered after every transaction.
3.11. SAP Business One
• Feature/Setting: Service Layer `InventoryPostingsService_Update` — receive triggers from external.
3.12. Microsoft Dynamics 365 Commerce
• Feature/Setting: Commerce API `PATCH /products/{productId}/inventory` on relevant actions.
3.13. Oracle NetSuite
• Feature/Setting: RESTlet/ SuiteScript for `inventory adjustment` per transaction or batch.
3.14. Zoho Inventory
• Feature/Setting: API `Update Item Stock`, automated for every sale/return event.
3.15. DEAR Systems
• Feature/Setting: API endpoint `/inventory/adjustment` POST for inventory balance updates.
3.16. QuickBooks Commerce
• Feature/Setting: API `/stock-adjustments` POST on triggers, reconcile both channels.
3.17. Clover POS
• Feature/Setting: Inventory API `Update Item` webhook on transaction.
3.18. ShipStation
• Feature/Setting: Product API `Update Product Inventory` after each fulfillment event.
3.19. SquareSpace Commerce
• Feature/Setting: Inventory API `PATCH /commerce/products/{id}` for real-time changes.
3.20. Wix Stores
• Feature/Setting: Inventory Management API `updateInventoryLevels` on action triggers.
3.21. Unleashed Software
• Feature/Setting: Inventory Adjustment API, triggered post integration sync or transaction.
3.22. Odoo
• Feature/Setting: XML-RPC `stock.quant` update after orders/returns/imports.
3.23. Finale Inventory
• Feature/Setting: Stock API `Update Product Quantities` on every sales channel event.

**Benefits**

4.1. Zero-lag inventory accuracy across online and physical locations.
4.2. Reduced lost sales due to stockouts or overselling.
4.3. Enhanced customer satisfaction via real-time product availability.
4.4. Decreased manual effort and human error in stock management.
4.5. Improved data-driven restocking and purchasing strategies.