Hi @Seller_qWZChZxyn0kQy,

Thank you for reaching out with this question!

Just to confirm, are you wondering about FBA or Seller Fulfilled orders?

For FBA shipments, you can send your inventory to Amazon by creating a shipping plan, packing your products, and sending them to the fulfillment centers that Amazon designates, using the carrier of your choice. I would recommend reading through this resource for more information in carrier requirements. Additionally, you can read about the Amazon Partnered Carrier program right here.

For Seller Fulfilled orders, you will want to make sure you confirm your carrier information when confirming the shipment. For more information on this process, please review this resource. If you haven't done so already, I'd also encourage you to read through this page for information on Amazon's Buy Shipping services.

I hope this helps! If you have any additional questions, please let me know.

All the best,

Jameson