Inventory sync between POS and WooCommerce (concepts)

Updated 2026-04-11 · Practical guide for NZ small businesses

Short answer: Treat inventory as a system of record problem—decide whether POS or ecommerce owns stock truth, then sync on a schedule you can afford.

Overselling during a Saturday rush hurts NZ shops that promised click-and-collect availability.

Concepts

Near-real-time APIs vs nightly CSV—cost and complexity differ.
SKU discipline—matching variants beats fuzzy titles.

Failure modes

Duplicate SKUs, manual stock edits bypassing sync, and cancelled web orders not returning stock.

Testing

Simulate concurrent sales; verify negative stock rules and backorder messaging.

Frequently asked questions

Which system should be master?

Often POS for physical-first retailers—ecommerce pulls or pushes depending on integration.

Is manual sync viable?

Only at tiny scale—plan automation before holiday peaks.