How to build an inventory system with AI

These are the parts a inventory system needs before it is useful. Each one is something the plan covers.

• Companies, warehouses and locations: Hold stock across warehouses, bins and consignment locations under one tenant.
• Purchasing and warehouse roles: Buyers, approvers, receivers and AP see and do different things.
• Items, variants and units: Define what is stocked, with variants, packaging and unit-of-measure conversions.
• Stock movement ledger: Every change of quantity is a movement; balances are derived and provable.
• Requisitions and purchase orders: Control what is bought, from whom, at what price, and who agreed.
• Approval chains: Route requisitions and POs by amount, category and cost center.
• Segregation of duties: Requester, approver, receiver and invoice-matcher must be different people for the same spend.
• Goods receipt and three-way match: Receive against POs and match quantity and price to the supplier invoice before payment.
• Stock and spend audit trail: Show who changed prices, approved spend, adjusted stock or overrode a match.

• Reorder rules and suggestions: Suggest what to buy before stock runs out.
• Cycle counts and adjustments: Reconcile physical stock to the system with accountable adjustments.
• Catalog and opening-stock import: Load items, suppliers, prices and opening balances.
• Exception queue: Work through match exceptions, receiving discrepancies and count variances.
• Reports and labels: Stock valuation, aging, supplier performance and printable pick, receive and barcode labels.

Each table below becomes part of the Postgres database that belongs to your app.

• warehouses: locations (zone/aisle/bin) belong to a warehouse in the locations table keyed by (warehouse_id, code).
• locations: kind: receiving|storage|picking|quarantine|shipping|consignment.
• items: valuation_method: fifo|average; variants in item_variants (item_id, attributes_json, sku_suffix); UOM conversions in uom_conversions.
• stock_moves: insert only; kind: receive|issue|transfer_out|transfer_in|adjust|count|return; a move needs at least one of from/to location; reversals reference the original.
• stock_balances: cache maintained only by the posting function; available = on hand minus reserved; verified nightly against stock_moves.
• suppliers: bank changes require a second approver; rating is updated from receipt timeliness and quality.
• purchase_orders: status: draft|pending_approval|approved|sent|part_received|received|closed|cancelled; CHECK (approved_by is distinct from requested_by); lines in po_lines (item, qty, price_minor, tax_minor).
• goods_receipts: lines in receipt_lines (po_line_id, qty, lot_code, location_id, condition); receiving creates stock_moves in the same transaction; over-receipt beyond tolerance needs approval.
• supplier_invoices: match_status: unmatched|matched|price_variance|qty_variance|override; override needs approval and a reason.

• No demand forecasting beyond simple reorder suggestions in phase 1.
• No robotics, WCS or automated storage integrations.
• No automatic sending of purchase orders from suggestions.
• No editing or deleting of stock movements; reversals only.
• No payment execution to suppliers (see accounting-erp).

Forge64 matches your description to one of 25 reference architectures, writes the plan and data model into the project, generates the app, and runs a quality gate over the code before you see it. Each app gets its own Postgres database and sign-in with no per-user fee. Hosting on Forge Cloud and Forge Payments are rolling out.

This is a reference design for the category, not a promise that every item is generated today. Built-ins such as background jobs, file uploads and search are rolling out; email sent from your app is coming soon, so anything here that needs it is something you add yourself for now.

What does an inventory system need first?

Companies, warehouses and locations, purchasing and warehouse roles, items, variants and units, stock movement ledger, requisitions and purchase orders and approval chains. The plan for a inventory system covers all of these before it generates code.

What should I leave out of the first version of an inventory system?

No demand forecasting beyond simple reorder suggestions in phase 1. No robotics, WCS or automated storage integrations. No automatic sending of purchase orders from suggestions.

Which products define the inventory system category?

Well-known examples include Odoo Inventory, Fishbowl, Cin7, NetSuite Inventory and Zoho Inventory. Use them to decide which features your users expect, then describe your own version.

• Inventory system architecture
• Example prompt for an inventory system
• Inventory system security checklist
• Inventory system scaling checklist
• Often combined: online store
• Often combined: accounting system
• All app types