{"product_id":"ai-inventory-forecasting-n8n-workflow-erp-postgres","title":"AI Inventory Forecasting n8n Workflow: ERP + Postgres","description":"\u003ch3\u003eAI Inventory Forecasting in n8n: ERP + PostgreSQL Purchase Orders\u003c\/h3\u003e\n\u003cp\u003eThis n8n workflow automatically monitors warehouse inventory and sales velocity, uses AI forecasting to predict demand, and generates purchase orders—then logs every transaction into your ERP and PostgreSQL database to help prevent stockouts or overstocking.\u003c\/p\u003e\n\n\u003ch3\u003eWhat this workflow does\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRuns on a schedule:\u003c\/strong\u003e The workflow checks inventory and sales data every \u003cstrong\u003e6 hours\u003c\/strong\u003e (adjustable for higher\/lower frequency).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFetches live inventory and sales trends:\u003c\/strong\u003e It retrieves current warehouse stock levels from a warehouse API endpoint and pulls sales velocity signals.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eForecasts demand with AI:\u003c\/strong\u003e Using \u003cstrong\u003eOpenAI GPT\u003c\/strong\u003e, it predicts future demand based on sales velocity and inventory\/stock trends.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCreates auto purchase orders:\u003c\/strong\u003e When demand indicates restocking is needed, it generates purchase orders and prepares them to be sent to suppliers.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrates with ERP:\u003c\/strong\u003e Completed purchase orders are logged into ERP systems such as \u003cstrong\u003eSAP, Oracle, or NetSuite\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLogs details to a SQL database:\u003c\/strong\u003e Purchase order information and \u003cstrong\u003eforecast confidence data\u003c\/strong\u003e are saved into \u003cstrong\u003ePostgreSQL\u003c\/strong\u003e (or other SQL databases like MySQL, where applicable).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSends email notifications:\u003c\/strong\u003e Relevant teams are notified when purchase orders are successfully created and logged.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModular configuration:\u003c\/strong\u003e Each node includes setup guidance and credential\/config notes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUse cases\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRestocking consumables by predicting demand from recent sales velocity and current on-hand inventory.\u003c\/li\u003e\n  \u003cli\u003eReducing manual purchasing by automatically generating supplier purchase orders on schedule.\u003c\/li\u003e\n  \u003cli\u003eEnsuring audit-ready reporting by recording forecasts and purchase orders in ERP + PostgreSQL.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003en8n nodes\/stack:\u003c\/strong\u003e code, filter, \u003cstrong\u003ePostgreSQL\u003c\/strong\u003e (SQL logging), email send, sticky note, HTTP request\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAI:\u003c\/strong\u003e OpenAI GPT for demand forecasting\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eERP support:\u003c\/strong\u003e SAP, Oracle, NetSuite\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCore logic:\u003c\/strong\u003e scheduled trigger → HTTP fetch → AI forecast → generate purchase order → ERP + database logging → email notifications\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"N8N Commerce","offers":[{"title":"Default Title","offer_id":46157949993139,"sku":"N8N-10531","price":13.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/6279\/6723\/files\/u4KaIPMCUK5I6yhtoZu9u_a0uG4Utu.png?v=1791019475","url":"https:\/\/buyflowscripts.com\/products\/ai-inventory-forecasting-n8n-workflow-erp-postgres","provider":"N8N Commerce","version":"1.0","type":"link"}