External Inventory

If you are using an external inventory solution ShipStation can act as a window to view your stock counts, so you know if it's okay to ship an order or not.

To connect your external inventory to ShipStation and view your stock counts, you must take the following basic steps:

  1. Connect your external inventory to ShipStation.

    For API partners, this means you must enter your ShipStation API key and secret into their platform first. This step is not required for non-API partner selling channels.

  2. Set your inventory source in your Ship From Location(s).

Review the sections below for detailed instructions on how to complete these steps. Once complete, you can then view the stock counts for your inventory sources directly on the orders in ShipStation.

Connect External Inventory

How you connect your external inventory partners will depend on which inventory platform you use. Some platforms will require ShipStation's API key and secret, but others will not.

In most cases, our API partners will require you to paste the ShipStation API key and secret into your partner account. See our list of supported inventory partners for more details.

Inventory Source

In ShipStation, you link an Inventory Source to your Ship From Location. For all orders that use that Ship From Location, ShipStation will query the linked Inventory Source to pull stock counts.

To pair an Inventory Source with a Ship From Location:

  1. If you are updating an existing location click the ellipsis menu next to the desired location.

    Ship From Locations menu with arrow pointing to Edit link.
  2. Select the desired Inventory Source from the drop down menu. You can select a specific Warehouse within the desired Inventory Source if needed.

    Sample Ship From Location details panel. Red box highlights Inventory Source dropdown, arrow points to location.

    Only One Inventory Source Can Be Linked Per Ship From Location

    Currently in ShipStation you can only link one inventory source per Ship from Location, but Inventory locations can be linked to multiple Ship from Locations.

  3. Click Save.

  4. Repeat as needed for all relevant Ship From Locations.

As you ship your orders ShipStation will use stock based on the Inventory Source linked to your Ship From Location.

View Stock Counts From External Sources

Once you've connected to your external inventory and set it as an inventory source for a Ship From Location, you can view your stock counts directly on each order or in the External Inventory Grid (select integrations only).

External Inventory Levels in Order Details Screen

External Inventory Levels in the Inventory Grid

Currently ShipStation supports showing external inventory counts from the following integrations:

Syncing Will Update Stock Levels in Your Selected Targets

Then inventory source you sync here will display stock levels in ShipStation and appear in your Inventory Sync settings. This will also update stock levels in your selected targets.

You must select an external inventory source to view and sync external stock levels to your inventory grid:

  1. Navigate to Settings > Inventory Management > Inventory Sync.

  2. Select Edit.

  3. Select the desired External Inventory Source.

  4. Click Save to sync your updated stock counts.

  5. Navigate to Products > External Inventory to view your updated stock counts.

ShipStation will refresh the sync your selected External Inventory Source every 10 minutes. You can also manually initiate a sync as needed using the Initiate Manual Sync button on the Inventory Sync settings page.

External Inventory Levels Unrelated to Product Details Inventory in ShipStation

External inventory linked to Ship From Locations is not related to stock levels in Product Details > Inventory Settings.

Troubleshooting External Inventory

Here are a few common issues you may encounter when using external inventory:

  • Unable to retrieve stock levels: If you see this message for items in your Order Details or Shipping Sidebar, make sure you have connected an inventory source to the selected Ship From Location.

  • If the inventory channel is not an option in the Inventory Source drop-down menu: Contact the inventory channel to make sure the account is configured to send stock counts to ShipStation. If required, make sure your ShipStation API key and secret have been entered into your inventory platform account.

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