If you are fulfilling orders with Deliverr through a BigCommerce direct integration, you cannot have your BigCommerce account connected to any other integration that is also connected to Deliverr.
Verify BigCommerce Settings
Deliverr does not support multiple shipping addresses per order. In your BigCommerce store admin, navigate to Advanced Settings -> Checkout and ensure that the "Allow customers to select multiple shipping addresses for an order" checkbox is NOT checked:
To help prevent overselling, Deliverr will periodically update the stock level for Deliverr-fulfilled items with the current value. For this to work, ALL listings for items that are sent to Deliverr to fulfill should be configured to track inventory. To check the status of an item, find the product details page in BigCommerce, choose Inventory from the sidebar, and ensure that the "Track Inventory" checkbox is on. If your product has multiple variants, you will also need to choose the "On the Variant level" radio button.
Connecting Deliverr to BigCommerce
To connect between Deliverr and BigCommerce, navigate to the Channels tab of the Deliverr Seller Portal. Scroll down to the Listing Tools section and click on the BigCommerce button:
Click on the Connect BigCommerce to Deliverr button:
From here, you'll be directed to the BigCommerce website. If you have a BigCommerce store, click Log In. Or, if you are a new BigCommerce user, click Sign Up and follow the instructions provided by BigCommerce to set up your store.
For an Existing BigCommerce Store
Use your BigCommerce credentials to log into your BigCommerce account. A new window redirecting you to Deliverr should generate. If it doesn't you'll see the following message - click "here" to be directed back to Deliverr.
It will take a few seconds for the connection to complete and your products to import. Once complete you'll see the following message:
Once connected, navigate back to the Channels page and click on the BigCommerce button:
Click the checkbox next to the name of your BigCommerce store and finally click Save Changes:
If you do not have BigCommerce inventory available with Deliverr, please create a new inbound for Deliverr with your BigCommerce inventory.
If you do have inventory in the Deliverr network that you want to sell through BigCommerce and your BigCommerce SKU is different from the existing SKU in Deliverr with inventory, you will need to manually link the SKU within your Deliverr catalog in order for us to push inventory quantities as well as fulfill orders.
For additional assistance on connecting your BigCommerce products to Deliverr, please see the below articles: