All products must be packaged to sell as single units (including multiple volume sets). Packaging must meet safety requirements to protect both the products and the workers handling the products. Visit the FBA Help section for the general Packaging and Prep Requirements that FBA inventory must meet upon arrival at the Amazon fulfillment center.
Printing barcodes directly on items: If you would like to print the barcode directly on items, use the UCC128 barcode. The UCC128 barcode standards are available on the Internet. Amazon uses the UCC128 barcode (font) to encode the FNSKU or the Shipment ID in the barcode. We don’t use any leading or trailing digits (application identifiers or checksum digits.) The full specification is UCC128 code set A (this is the code set that supports alphanumeric data). If you are building the barcode from scratch, you can review the standards or purchase software (there are many barcode applications available for free or at reasonable prices).
Same here, I integrate my FNSKUs into all my packaging.
No problem at all. The only thing to be mindful of is the minimum required “quite space” around the barcode. Basically leave a little space around the barcode and you will be fine. Exact dimensions are available on seller central if you want to dig into it some more.
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