Can an ITF-14 (GTIN-14) be used as the manufacturer barcode for a master carton sold as a single unit in Amazon FBA?

I’m a new Amazon seller trying to clarify how barcode requirements work for FBA.

I have a product where the unit of sale is a master carton. For example, think of something like 10 boxes of 100 paper clips sold together as one item. The master carton itself is the product customers buy.

In this case:

The master carton is the sellable unit

It has its own ASIN

It has a GTIN-14

The barcode printed on the carton is an ITF-14 encoding that GTIN-14

Since the outer carton itself is the retail unit, I’m wondering whether Amazon would accept the ITF-14 barcode as the manufacturer barcode in the Send to Amazon (FBA inbound) workflow, instead of requiring an FNSKU label or a UPC/EAN barcode.

In other words, if the ASIN is tied to the GTIN-14, and the barcode on the sellable unit is ITF-14 encoding that GTIN-14, will Amazon accept that as the manufacturer barcode when receiving FBA inventory?

Or does Amazon effectively require UPC/EAN-style barcodes on sellable units, even when the product’s GTIN is 14 digits and printed as ITF-14?

Would appreciate hearing from anyone who has successfully sent master-carton products like this to FBA without relabeling.

Thanks in advance!