When sending in new products inbound to Amazon for FBA, how do you know the requirements for prep and packaging?
Amazon will let you know the prep requirements. Good rule of thumb is if it is a single unit most of the time it only requires a FNSKU.
If you are packing multipacks you will need a polybag with a suffocation warning, “do not separate” sticker, and the FNSKU.
If you have a question you can create a mock shipment of the item and in the “Prepare Products” section it will provide you with the prep guidance for your product.