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May 6, 2025
7 min read

Introducing Multi-Location Inventory Sync

Today we're launching Location Groups — the feature that automatically syncs inventory across stores that share warehouse locations. If you've been manually updating stock levels across multiple stores, this changes everything.

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Amara Nwosu
May 6, 2025

Today we're launching Location Groups — the feature that automatically syncs inventory across stores that share warehouse locations.

For the past six months, this has been our most requested feature. And for good reason: if you're running multiple Shopify stores that pull from the same warehouse, keeping inventory in sync is a nightmare.

The Problem

Let's say you have three stores — a main US storefront, a wholesale portal, and a regional store in Canada. All three stores sell the same products, and all three fulfill orders from the same warehouse in New Jersey.

When someone buys a product on your US store, the inventory count drops there. But your wholesale portal and Canadian store still show the old count. Unless you manually update them. Every single time.

Most merchants we talked to were either:

  • Manually adjusting inventory across stores (taking 10-20 hours per week)
  • Running custom scripts that broke constantly
  • Just accepting the risk of overselling and dealing with angry customers

How Location Groups Work

Location Groups let you link stores that share the same physical warehouse location. Once linked, inventory changes in one store automatically propagate to all connected stores in real-time.

Here's how it works:

1. **Create a Location Group** — Give it a name like 'Dubai Warehouse' or 'New Jersey Fulfillment Center'

2. **Add stores to the group** — Select which stores share this warehouse location

3. **Map locations** — For each store, tell us which Shopify location corresponds to this warehouse

4. **Turn on sync** — That's it. Inventory now stays in sync automatically

When a product sells on any store in the group, the inventory count updates across all stores instantly. No webhooks to configure. No scripts to maintain. It just works.

Real-Time, Not Eventual

This isn't eventual consistency. It's real-time synchronization.

We process inventory updates in under 200ms on average. When a customer buys the last item on your US store, your Canadian store sees that change before the checkout page loads.

Preventing Overselling

The hardest part of building this feature was handling race conditions. What happens when two customers on different stores try to buy the last item at the exact same time?

We built a distributed locking system that ensures only one order goes through. The second customer sees an 'out of stock' message before they can complete checkout.

Who This Is For

Location Groups are perfect for:

  • Regional stores that share a central warehouse
  • Wholesale + retail operations with shared inventory
  • Multi-currency stores that fulfill from the same location
  • Any merchant running multiple stores on shared inventory

Getting Started

Location Groups are available today on all SyncTec plans. If you're already a customer, you'll see the new 'Location Groups' tab in your dashboard.

We've also published a complete setup guide that walks through configuration step-by-step, including how to handle edge cases and troubleshoot common issues.

This feature took six months to build and another two months of beta testing with 50+ merchants. We're proud of how it turned out, and we can't wait to see what you build with it.

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