# One-Way Inventory Sync
One-Way Inventory Sync keeps inventory updated in **one direction only**:
**Source store controls inventory** → **Destination store follows**
This is the safest option if you want one “master” store to manage stock.
### ✅ When should you use One-Way Sync?
Use this mode if:
* you manage inventory in one main store (Source)
* you want Destination stores to always match Source stock
* you don’t want Destination store sales/adjustments to change Source inventory
***
### ⚙️ **Steps to Set Up One-Way Inventory Sync**
#### **In Source store**
1\. Open the app in Source store > click **Settings** > Enable **Share product** setting
2\. In **Inventory and Orders** part, select **One-Way Inventory Sync**
3\. Click **Save**
***
### ✅ How One-Way Inventory Sync works
When inventory changes in the **Source store** (sale, restock, manual adjustment), the app will:
1. Find the same product in Destination (matched by handle or SKU or barcode)
2. Apply the inventory update to the mapped Destination location
3. Update inventory in Destination to match Source
⇒ Destination can receive updates\
⇒ Destination changes do **not** update Source
***
### 🧪 Example: Source updates Destination
**One-Way Inventory Sync (Based on Product Handle)**
Let’s say you have two Shopify stores connected:
* ```
Source Store: https://furniture-eu.myshopify.com
```
* ```
Destination Store: https://furniture-us.myshopify.com
```
You are syncing a product called:
Product Name: Modern Oak Bookshelf\
Handle: `modern-oak-bookshelf`
| Store | Inventory Before | Inventory After |
| ----------------- | ---------------- | --------------- |
| Source Store | 20 | 15 |
| Destination Store | 20 | **15** ✅ |
When someone buys 5 units in the Source Store, the inventory in the Destination Store is automatically updated to match (15 left).
✅ This works because both products have the same handle: `modern-oak-bookshelf`.
**What Happens if Inventory Changes in the Destination Store?**
Let’s say a customer buys 2 units from the Destination Store.
| Store | Inventory Before | Inventory After |
| ----------------- | ---------------- | --------------- |
| Destination Store | 15 | 13 |
| Source Store | 15 | **15** ❌ |
In One-Way Sync, the Source Store is not affected. Inventory changes in the Destination Store do not sync back.
***
**🙋 Still need support?**
If you still need help, please feel free to contact us at . We’ll be happy to assist you further.
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://docs.tipo.io/inventory-sync/one-way-inventory-sync.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.