You're trying to create a listing for your amz private label product, but it does not accept your brand name and gives an error 5665. Such a frustrating moment so ill help you to get rid of this error first we talk about why error 5665 occurs.
Well, the error occurs when you create new listings for products that have not been brand registered yet. amz wants proof that you are the brand owner of a Well product before you make a listing under that brand name.
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