Let me give you information regarding UPC again.
UPC is unique product code of your product and you can use this UPC in different marketplaces that means you can use same UPC on flipkart, Amazon and other websites. For listing private label products we use UPC codes.
If you are going to three different listing then you require three UPC.
If you run into any other issues at all, feel free to reach out to me, I’d be more than happy to help!
Number: + 91 8447649836, 01905 235864
Have a great day, in the meantime! ?