I received the UPC codes in a timely manner and proceded to add them to my products. Then I discovered that what I need are the ASIN numbers, not the UPC codes. Every time I look up how to get the ASIN number, I get a different answer that is not clear for my products. My products are HANDMADE, ONE-OF-A-KIND and I should only need the SKU code from my GoDaddy website, but it appears that is not enough for Amazon which is in partners with my website. I'm ready to just give up. Very frustrated. Not your fault.