API Amazon Multiple Labels

Are you looking for separate boxes or multiple labels and shipments?

Our goal would be to be able to request and print multiple Amazon Buy shipping labels for a single order

For the latter, you can split an order and then ship each order out separately.

I assume you’re referring to POST /order/order_number/split…?
I found some help articles:

Can you confirm that splitting orders in this way to get multiple labels will have the same results as purchasing multiple Amazon Buy labels for a single order through the Seller Central website?