Amazon error 6045: Product ID missing - GTIN exemption requiredYou left external_product_id blank in a category that requires a barcode, and the account does not hold a GTIN exemption for that brand and category.How to fix error 6045

Buy legitimate GS1 barcodes if the product will be sold widely - this is the durable fix.

Otherwise apply for a GTIN exemption in Seller Central (Catalog > Add Products > Apply for a GTIN exemption) for the exact brand plus category pair.

Approval is per brand and per category - an exemption for one category does not carry to another.

After approval, re-upload leaving external_product_id blank; do not invent a placeholder code.

For handmade or private-label goods, keep the supporting brand evidence on file - Amazon re-checks.

All Amazon flat-file error codes