Warehouse Inventory Audit: Data Sync Tutorial

This workflow is a self-contained tutorial demonstrating n8n's powerful Compare Datasets node for robust data synchronization. It uses a warehouse inventory audit analogy: Warehouse A as the source-of-truth master list, and Warehouse B as a remote database needing sync. The Auditor (Compare Datasets node) compares lists by product_id, outputting four categories: items in A only (add to B), identical items (no action), differences (update B), and items in B only (delete from B).

Perfect for beginners advancing from basic logic, this pattern forms the foundation for any two-way data sync, such as CRM updates, ERP inventory, or sheet-database mirroring. Benefits include automated discrepancy detection, reducing manual audits, preventing stock errors, and ensuring data consistency across systems.

Use cases span inventory management, sales ops, CRM integrations, and beyond—sync Notion/Google Sheets with databases, audit partner inventories, or reconcile sales data. No setup required; execute to see results instantly.

Explore Set nodes for sample data, configure the Auditor, and adapt for real integrations like Airtable, MySQL, or Shopify for production syncs.