If you made a mistake and need to start over after you've already created FBA shipments, you can delete them in Seller Central.
- Make sure you're logged into Seller Central.
- In Seller Central, click Inventory from the navigation menu, then click Shipments.
- Click the Work on Shipment button located to the right of the shipment, or paste the shipment ID into the search bar to find it.
Scroll all the way to the bottom of the page. If you have not completed the shipment yet, click the Delete workflow button.
A window will open asking you to confirm the deletion. Click the checkbox and then click Delete workflow to proceed.