Merchants working with both Deliverr and WFS cannot use the same SKU for products fulfilled through both programs. If the same SKU is used, the inventory in WFS will be prioritized and the Deliverr inventory will only be used when WFS inventory is out of stock.
Any inbound inventory being processed at WFS will be prioritized over active Deliverr inventory.
Note: You can have active inventory at Deliverr but once you've committed to sending units to WFS, your listing will not be live due to inbounding WFS inventory.
You cannot create a duplicate listing for the same SKU to have two live listings (e.g., one with WFS and one with "Partner," which is Deliverr-fulfilled). As noted above, WFS and Deliverr must have entirely different SKUs for fulfillment and for your listings.