Keep your BigCommerce store inventory accurate by syncing stock levels directly from Katana.
Turning on stock sync
Enable stock sync during the initial BigCommerce connection by checking the option on the third step (Stock sync) or later from the reconfiguration flow.
During reconfigure:
Click the puzzle-piece icon in the navigation bar to open the Integrations Marketplace.
Find BigCommerce and click Manage > Reconfigure.
In the connection wizard, move forward to the 3rd step (Stock sync) and check Sync stock levels from Katana to BigCommerce.
Click Next > Confirm to activate stock sync.
Why sync stock to BigCommerce?
Using Katana as your source of truth for stock ensures that BigCommerce always shows accurate availability.
Stock in Katana combines on-hand inventory with demand across sales channels.
Customers see the correct stock in your store without manual updates.
You can choose whether sales orders created in Katana affect BigCommerce stock.
When to turn continuous stock sync on/off
Switch off if:
You connected Katana to a live BigCommerce store, but are still testing.
Stock updates in Katana don’t yet reflect your actual stock.
Switch on if:
You’re ready to fully run your business with Katana.
You connected Katana to a test BigCommerce store.
You want real-time stock updates between platforms.
How continuous stock sync works
When enabled, Katana syncs stock levels to BigCommerce in real time whenever:
In stock or Committed quantities change (e.g. after creating/editing a sales order, manufacturing order, purchase order, or stock adjustment).
Note: Katana does not push all stock levels immediately after connection. Products sync gradually as stock changes occur.
To update everything at once, export your Inventory list from Katana and import it to BigCommerce.
Which quantity is synced?
You can choose one of two sync options during setup:
In stock only – syncs Katana’s In stock quantity.
In stock minus commitments – syncs In stock – Committed quantity.
Important note for bundles/kits:
Committed quantity only includes items directly on sales orders.
Commitments as part of a recipe/subassembly are not included in sync calculations.
This means the committed value shown in sync may differ slightly from Katana’s Stock screen.
Why does Katana deduct commitments before syncing?
In BigCommerce, inventory can be configured as:
Available (free): deducts commitments immediately.
Physical (available): deducts commitments only once orders are fulfilled.
In Katana, In stock does not decrease when an SO is created — only when it’s Packed or Delivered.
To keep numbers aligned, Katana uses In stock – Committed for sync when you choose that option.
Reduce stock availability in BigCommerce based on Katana order commitments
To help ensure you don't accidentally oversell stock, you can choose to reduce the stock available in BigCommerce based on commitments that have been made in Katana.
This is great if, for example:
A manufacturing order is taking some stock in Katana, but this isn't visible in BigCommerce
You deal with kits/bundles in Katana, and those recipes are taking stock that wouldn't be otherwise visible in BigCommerce.
Which products are synced?
Stock sync works only for products that exist in both systems with matching codes:
Katana Variant Code ↔ BigCommerce SKU.
If multiple BigCommerce products share the same SKU, they all receive the same synced quantity.
If no match is found, stock is not synced (new products are not created in BigCommerce).
If multiple Katana variants share the same code, the most recently created variant is used for sync.
Tip: Keep your SKUs/Variant Codes unique in Katana to avoid mismatches.
Multiple BigCommerce stores
If you connect more than one store, stock sync works the same way for each:
Products with matching SKUs are synced across all stores.
You can map each store to the same or a different Katana location.
With stock sync enabled, Katana ensures BigCommerce always reflects your true available inventory — saving you time and preventing overselling.
Your feedback is invaluable. Let us know your thoughts on this article or anything in Katana you'd like to see improved: [email protected]