How do I sync products or inventory across multiple Shopify stores?

You can sync products or inventory across multiple Shopify stores by installing syncX: Stock Sync in each store and creating the appropriate feeds.
📘 Learn more about real-time quantity sync here: Shopify store (Real time quantity sync)

After selecting Add Feed or Update Feed, you must first choose the Shopify Store (requires Stock Sync app) connection type. This ensures that the destination store can connect correctly to the source store using a public token.
📘 Refer to this guide for details: Shopify store (require Stock Sync app)

Example setup scenarios

To sync products or inventory using syncX: Stock Sync across multiple stores (Store A, Store B, and Store C):

• Install the Stock Sync app in each store.
• Feeds are always created in the destination store.
• Public tokens are used to connect to the source store.
• For two-way sync, feeds must exist in both stores.

First scenario: One-way sync (Store A → Store B)

To sync products or inventory one-way from Store A to Store B:

• Create the feed in Store B.
• Select Shopify Store (requires Stock Sync app) as the connection.
• Enter Store A’s public token.

Second scenario: Two-way sync (Store A ↔ Store B)

To sync products or inventory two-way between Store A and Store B:

• Create a feed in Store A using Store B’s public token.
• Create another feed in Store B using Store A’s public token.
• Both feeds must use the Shopify Store connection type.

Third scenario: Multiple source stores (Store A + Store B → Store C)

or inventory into Store C from multiple stores:

• Create two separate feeds in Store C.
• One feed using Store A’s public token
• One feed using Store B’s public token
• Each feed represents one source store.

Real-time quantity sync behavior

Note: Real-time sync only reflects quantity changes that occur after the feed is activated. Existing quantities will not update automatically until a change happens. Run a one-time update feed if you need to match all quantities first.

• Real-time sync is trigger-based — it only updates when the source store’s quantity changes.
• It is one-way unless you set up a real-time sync feed in both stores.
• Orders placed in the destination store do not update the source store’s inventory unless a second feed is created in the reverse direction.
• You can target specific locations using Quantity field > Smart Settings.
• Cart reservations are not tracked by Stock Sync. Quantity will only decrease if the Shopify store itself deducts stock when items are added to cart.

Importing only selected products from another Shopify store

Note: If products are not assigned to the Online Store sales channel, ensure your feed's Published filter is set to Any, otherwise Stock Sync may treat the store as empty.

Also note that Stock Sync updates only one inventory location, so ensure the correct location is selected if inventory is not updating as expected.
To import a subset of products (for example, a specific category) from one Shopify store to another:

• Create an Add Feed in the destination store.

To import a subset of products (for example, a specific category) from one Shopify store to another:

• Create an Add Feed in the destination store.
• Use the Shopify Store (requires Stock Sync app) connection and enter the source store’s public token.
• In Step 3: Filter, apply conditions such as tags, collections, product type, or handle to restrict which products are imported.
• Ensure that each product has a valid identifier (SKU or Barcode). If these are missing, Stock Sync may attempt to match by Handle, but differences between stores may prevent matching.
• Products without any usable identifier will not sync.

One-Time Initial Quantity Push Before Real-Time Sync

If you need to push all quantities first before enabling real-time sync:

• Create a standard Update Feed using Shopify Store (Price & Quantity Field Only).
• Remove the Price field so only quantity updates.
• Run the feed once to push all quantities.
• Optional: You can delete the feed to keep the feed limit
• Then create the Real-Time Quantity Sync feed.

Order Sync Between Shopify Stores

Order sync is not part of Stock Sync. To push orders from one Shopify store to another, both stores must install the SyncX Order Export app.

Syncing Duplicate Products Within the Same Shopify Store

If two products share the same SKU or barcode and should maintain the same inventory, syncing is only possible through an Update Feed as the source of truth.

Stock Sync cannot automatically link or sync inventory between duplicated products inside the same Shopify store without a feed.

To sync duplicates:

• Create an Update Feed (using a file, Google Sheet, or any supported source).
• Ensure the feed contains the SKU/barcode used by both products.
• Enable Update duplicate products with same product identifier under the Product Identifier Field.

Stock Sync cannot sync duplicated products directly from store-to-store within the same Shopify store.

Key reminders

• Feeds are always created in the destination store.
• Public tokens identify the source store.
• Both stores must have the Stock Sync app installed. The source store may use the Free plan, but the destination store requires a Paid plan.
• To access the Shopify Store connection, select Create New Feed → Find More → Shopify Store (requires Stock Sync app).
• One Real-Time Sync feed updates quantities only and in one direction.
• A new backend option now automatically assigns missing inventory locations during real-time sync.
• One feed connects one source store to one destination store.

Updated on: 10/07/2026