Box labels on a 1 unit per box

I am shipping 1,000 units to an Amazon warehouse. I am selling an oversized product and, according to Amazon's policies, each item should be packaged in a master carton. The item is placed in a carton that displays my brand name and information. I want to use this exact carton as the master carton since it wouldn't make sense to place each carton inside another master carton. Is this approach feasible? (Considering my packaging carton as the master carton).

If yes, during the workflow of creating a shipment, I selected the following options:

1. Packaging details:

1.1 Template type: Case Pack

1.2 Units per box: 1

1.3 The dimensions and weight of each carton (which, in this instance, serves as the master carton)

As a result, I have a total of 1,000 boxes and 1,000 units.

However, Amazon is suggesting that I also print 1,000 box labels. This seems illogical because once an item is ordered by customers, it will be delivered with the internal shipping information already on it.

Has anyone faced a similar issue and found a solution?